25117725705 has 32 divisors (see below), whose sum is σ = 40848883200. Its totient is φ = 13177212672.

The previous prime is 25117725649. The next prime is 25117725707. The reversal of 25117725705 is 50752771152.

It is not a de Polignac number, because 25117725705 - 2⁸ = 25117725449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25117725707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279367 + ... + 358163.

It is an arithmetic number, because the mean of its divisors is an integer number (1276527600).

Almost surely, 2^25117725705 is an apocalyptic number.

It is an amenable number.

25117725705 is a deficient number, since it is larger than the sum of its proper divisors (15731157495).

25117725705 is a wasteful number, since it uses less digits than its factorization.

25117725705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79153.

The product of its (nonzero) digits is 171500, while the sum is 42.

The spelling of 25117725705 in words is "twenty-five billion, one hundred seventeen million, seven hundred twenty-five thousand, seven hundred five".