25904525 has 12 divisors (see below), whose sum is σ = 32224500. Its totient is φ = 20657280.

The previous prime is 25904521. The next prime is 25904573. The reversal of 25904525 is 52540952.

It can be written as a sum of positive squares in 6 ways, for example, as 3455881 + 22448644 = 1859^2 + 4738^2 .

It is not a de Polignac number, because 25904525 - 2² = 25904521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25904491 and 25904500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25904521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7241 + ... + 10209.

It is an arithmetic number, because the mean of its divisors is an integer number (2685375).

Almost surely, 2^25904525 is an apocalyptic number.

25904525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25904525 is a deficient number, since it is larger than the sum of its proper divisors (6319975).

25904525 is a wasteful number, since it uses less digits than its factorization.

25904525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328 (or 3323 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 25904525 is about 5089.6488091026. The cubic root of 25904525 is about 295.8865411581.

The spelling of 25904525 in words is "twenty-five million, nine hundred four thousand, five hundred twenty-five".