25156730085 has 32 divisors (see below), whose sum is σ = 40372058880. Its totient is φ = 13376563200.

The previous prime is 25156730077. The next prime is 25156730111. The reversal of 25156730085 is 58003765152.

It is not a de Polignac number, because 25156730085 - 2³ = 25156730077 is a prime.

It is a super-2 number, since 2×25156730085² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8791555 + ... + 8794415.

It is an arithmetic number, because the mean of its divisors is an integer number (1261626840).

Almost surely, 2^25156730085 is an apocalyptic number.

It is an amenable number.

25156730085 is a deficient number, since it is larger than the sum of its proper divisors (15215328795).

25156730085 is a wasteful number, since it uses less digits than its factorization.

25156730085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4429.

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 25156730085 in words is "twenty-five billion, one hundred fifty-six million, seven hundred thirty thousand, eighty-five".