25916131 has 2 divisors, whose sum is σ = 25916132. Its totient is φ = 25916130.

The previous prime is 25916119. The next prime is 25916161. The reversal of 25916131 is 13161952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25916131 - 2⁹ = 25915619 is a prime.

It is a super-2 number, since 2×25916131² = 1343291692018322, which contains 22 as substring.

It is equal to p_1619605 and since 25916131 and 1619605 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25916131.

It is not a weakly prime, because it can be changed into another prime (25916161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12958065 + 12958066.

It is an arithmetic number, because the mean of its divisors is an integer number (12958066).

Almost surely, 2^25916131 is an apocalyptic number.

25916131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25916131 is an equidigital number, since it uses as much as digits as its factorization.

25916131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 28.

The square root of 25916131 is about 5090.7888386772. The cubic root of 25916131 is about 295.9307232263.

The spelling of 25916131 in words is "twenty-five million, nine hundred sixteen thousand, one hundred thirty-one".