25657852759 has 16 divisors (see below), whose sum is σ = 31995440640. Its totient is φ = 19989113760.

The previous prime is 25657852751. The next prime is 25657852777. The reversal of 25657852759 is 95725875652.

It is not a de Polignac number, because 25657852759 - 2³ = 25657852751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25657852697 and 25657852706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25657852751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386022 + ... + 447580.

It is an arithmetic number, because the mean of its divisors is an integer number (1999715040).

Almost surely, 2^25657852759 is an apocalyptic number.

25657852759 is a deficient number, since it is larger than the sum of its proper divisors (6337587881).

25657852759 is a wasteful number, since it uses less digits than its factorization.

25657852759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66990.

The product of its digits is 52920000, while the sum is 61.

The spelling of 25657852759 in words is "twenty-five billion, six hundred fifty-seven million, eight hundred fifty-two thousand, seven hundred fifty-nine".