25879631 has 2 divisors, whose sum is σ = 25879632. Its totient is φ = 25879630.

The previous prime is 25879597. The next prime is 25879663. The reversal of 25879631 is 13697852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25879631 is a prime.

It is a super-2 number, since 2×25879631² = 1339510601392322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25879681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12939815 + 12939816.

It is an arithmetic number, because the mean of its divisors is an integer number (12939816).

Almost surely, 2^25879631 is an apocalyptic number.

25879631 is a deficient number, since it is larger than the sum of its proper divisors (1).

25879631 is an equidigital number, since it uses as much as digits as its factorization.

25879631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 25879631 is about 5087.2026694442. The cubic root of 25879631 is about 295.7917294047.

The spelling of 25879631 in words is "twenty-five million, eight hundred seventy-nine thousand, six hundred thirty-one".