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25750030 = 2515117053
BaseRepresentation
bin110001000111…
…0101000001110
31210110020101211
41202032220032
523043000110
62315525034
7431604655
oct142165016
953406354
1025750030
1113598419
12875977a
135447707
1435c419c
1523d998a
hex188ea0e

25750030 has 16 divisors (see below), whose sum is σ = 46659744. Its totient is φ = 10231200.

The previous prime is 25750027. The next prime is 25750037. The reversal of 25750030 is 3005752.

It is a junction number, because it is equal to n+sod(n) for n = 25749983 and 25750010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25750037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7017 + ... + 10036.

It is an arithmetic number, because the mean of its divisors is an integer number (2916234).

Almost surely, 225750030 is an apocalyptic number.

25750030 is a deficient number, since it is larger than the sum of its proper divisors (20909714).

25750030 is a wasteful number, since it uses less digits than its factorization.

25750030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17211.

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 25750030 is about 5074.4487385331. The cubic root of 25750030 is about 295.2971438596.

Adding to 25750030 its reverse (3005752), we get a palindrome (28755782).

The spelling of 25750030 in words is "twenty-five million, seven hundred fifty thousand, thirty".

Divisors: 1 2 5 10 151 302 755 1510 17053 34106 85265 170530 2575003 5150006 12875015 25750030