25526939 has 2 divisors, whose sum is σ = 25526940. Its totient is φ = 25526938.

The previous prime is 25526927. The next prime is 25526957. The reversal of 25526939 is 93962552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25526939 - 2⁴ = 25526923 is a prime.

It is a super-2 number, since 2×25526939² = 1303249229419442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 25526896 and 25526905.

It is not a weakly prime, because it can be changed into another prime (25526909) 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, 12763469 + 12763470.

It is an arithmetic number, because the mean of its divisors is an integer number (12763470).

Almost surely, 2^25526939 is an apocalyptic number.

25526939 is a deficient number, since it is larger than the sum of its proper divisors (1).

25526939 is an equidigital number, since it uses as much as digits as its factorization.

25526939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 41.

The square root of 25526939 is about 5052.4191235486. The cubic root of 25526939 is about 294.4418787588.

The spelling of 25526939 in words is "twenty-five million, five hundred twenty-six thousand, nine hundred thirty-nine".