25904507 has 2 divisors, whose sum is σ = 25904508. Its totient is φ = 25904506.

The previous prime is 25904491. The next prime is 25904513. The reversal of 25904507 is 70540952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25904507 - 2⁴ = 25904491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25984507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12952253 + 12952254.

It is an arithmetic number, because the mean of its divisors is an integer number (12952254).

Almost surely, 2^25904507 is an apocalyptic number.

25904507 is a deficient number, since it is larger than the sum of its proper divisors (1).

25904507 is an equidigital number, since it uses as much as digits as its factorization.

25904507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 25904507 is about 5089.6470408074. The cubic root of 25904507 is about 295.8864726249.

The spelling of 25904507 in words is "twenty-five million, nine hundred four thousand, five hundred seven".