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1575425 = 52294153
BaseRepresentation
bin110000000101000000001
32222001002002
412000220001
5400403200
653433345
716251035
oct6005001
92861062
101575425
11986705
1263b855
13432107
142d01c5
15211bd5
hex180a01

1575425 has 24 divisors (see below), whose sum is σ = 2109240. Its totient is φ = 1164800.

The previous prime is 1575421. The next prime is 1575433. The reversal of 1575425 is 5245751.

It can be written as a sum of positive squares in 12 ways, for example, as 638401 + 937024 = 799^2 + 968^2 .

It is not a de Polignac number, because 1575425 - 22 = 1575421 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (1575421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29699 + ... + 29751.

It is an arithmetic number, because the mean of its divisors is an integer number (87885).

21575425 is an apocalyptic number.

1575425 is the 1025-th pentagonal number and also the 725-th octagonal number.

It is an amenable number.

1575425 is a deficient number, since it is larger than the sum of its proper divisors (533815).

1575425 is a wasteful number, since it uses less digits than its factorization.

1575425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 128 counting only the distinct ones).

The product of its digits is 7000, while the sum is 29.

The square root of 1575425 is about 1255.1593524330. The cubic root of 1575425 is about 116.3588028258.

The spelling of 1575425 in words is "one million, five hundred seventy-five thousand, four hundred twenty-five".

Divisors: 1 5 25 29 41 53 145 205 265 725 1025 1189 1325 1537 2173 5945 7685 10865 29725 38425 54325 63017 315085 1575425