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38750625 = 3254832
BaseRepresentation
bin1001001111010…
…0100110100001
32200220201212100
42103310212201
534410010000
63502321013
7650242404
oct223644641
980821770
1038750625
111a967a11
1210b89169
138049c84
145209d3b
153606a00
hex24f49a1

38750625 has 45 divisors (see below), whose sum is σ = 70796869. Its totient is φ = 20418000.

The previous prime is 38750623. The next prime is 38750629. The reversal of 38750625 is 52605783.

The square root of 38750625 is 6225.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 3038049 + 35712576 = 1743^2 + 5976^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 38750625 - 21 = 38750623 is a prime.

It is a super-2 number, since 2×387506252 = 3003221875781250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38750625.

It is not an unprimeable number, because it can be changed into a prime (38750623) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 466834 + ... + 466916.

Almost surely, 238750625 is an apocalyptic number.

38750625 is the 6225-th square number.

38750625 is the 3113-rd centered octagonal number.

It is an amenable number.

38750625 is a deficient number, since it is larger than the sum of its proper divisors (32046244).

38750625 is an frugal number, since it uses more digits than its factorization.

38750625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The cubic root of 38750625 is about 338.3967919234.

Multiplying 38750625 by its sum of digits (36), we get a square (1395022500 = 373502).

The spelling of 38750625 in words is "thirty-eight million, seven hundred fifty thousand, six hundred twenty-five".

Divisors: 1 3 5 9 15 25 45 75 83 125 225 249 375 415 625 747 1125 1245 1875 2075 3735 5625 6225 6889 10375 18675 20667 31125 34445 51875 62001 93375 103335 155625 172225 310005 466875 516675 861125 1550025 2583375 4305625 7750125 12916875 38750625