25787330131 has 2 divisors, whose sum is σ = 25787330132. Its totient is φ = 25787330130.

The previous prime is 25787330099. The next prime is 25787330183. The reversal of 25787330131 is 13103378752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25787330131 - 2⁵ = 25787330099 is a prime.

It is a super-2 number, since 2×25787330131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25787330431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12893665065 + 12893665066.

It is an arithmetic number, because the mean of its divisors is an integer number (12893665066).

Almost surely, 2^25787330131 is an apocalyptic number.

25787330131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25787330131 is an equidigital number, since it uses as much as digits as its factorization.

25787330131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 25787330131 in words is "twenty-five billion, seven hundred eighty-seven million, three hundred thirty thousand, one hundred thirty-one".