25904929 has 2 divisors, whose sum is σ = 25904930. Its totient is φ = 25904928.

The previous prime is 25904887. The next prime is 25904941. The reversal of 25904929 is 92940952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14615329 + 11289600 = 3823^2 + 3360^2 .

It is a cyclic number.

It is not a de Polignac number, because 25904929 - 2¹³ = 25896737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25904891 and 25904900.

It is not a weakly prime, because it can be changed into another prime (25904959) 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 as a sum of consecutive naturals, namely, 12952464 + 12952465.

It is an arithmetic number, because the mean of its divisors is an integer number (12952465).

Almost surely, 2^25904929 is an apocalyptic number.

It is an amenable number.

25904929 is a deficient number, since it is larger than the sum of its proper divisors (1).

25904929 is an equidigital number, since it uses as much as digits as its factorization.

25904929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 25904929 is about 5089.6884973444. The cubic root of 25904929 is about 295.8880793390. Note that the first 3 decimals are identical.

The spelling of 25904929 in words is "twenty-five million, nine hundred four thousand, nine hundred twenty-nine".