25656913039 has 2 divisors, whose sum is σ = 25656913040. Its totient is φ = 25656913038.

The previous prime is 25656913013. The next prime is 25656913063. The reversal of 25656913039 is 93031965652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25656913039 - 2⁹ = 25656912527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25656912983 and 25656913001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25656913939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12828456519 + 12828456520.

It is an arithmetic number, because the mean of its divisors is an integer number (12828456520).

Almost surely, 2^25656913039 is an apocalyptic number.

25656913039 is a deficient number, since it is larger than the sum of its proper divisors (1).

25656913039 is an equidigital number, since it uses as much as digits as its factorization.

25656913039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1312200, while the sum is 49.

The spelling of 25656913039 in words is "twenty-five billion, six hundred fifty-six million, nine hundred thirteen thousand, thirty-nine".