25315604 has 12 divisors (see below), whose sum is σ = 44487828. Its totient is φ = 12604800.

The previous prime is 25315583. The next prime is 25315607. The reversal of 25315604 is 40651352.

It can be written as a sum of positive squares in 2 ways, for example, as 7236100 + 18079504 = 2690^2 + 4252^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25315607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12167 + ... + 14094.

It is an arithmetic number, because the mean of its divisors is an integer number (3707319).

Almost surely, 2^25315604 is an apocalyptic number.

It is an amenable number.

25315604 is a deficient number, since it is larger than the sum of its proper divisors (19172224).

25315604 is a wasteful number, since it uses less digits than its factorization.

25315604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26506 (or 26504 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 25315604 is about 5031.4614179183. The cubic root of 25315604 is about 293.6270743247.

Adding to 25315604 its reverse (40651352), we get a palindrome (65966956).

The spelling of 25315604 in words is "twenty-five million, three hundred fifteen thousand, six hundred four".