25717056430 has 16 divisors (see below), whose sum is σ = 49851525024. Its totient is φ = 9495528480.

The previous prime is 25717056419. The next prime is 25717056457. The reversal of 25717056430 is 3465071752.

It is a super-2 number, since 2×25717056430² (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 7 ways as a sum of consecutive naturals, for example, 98911626 + ... + 98911885.

It is an arithmetic number, because the mean of its divisors is an integer number (3115720314).

Almost surely, 2^25717056430 is an apocalyptic number.

25717056430 is a deficient number, since it is larger than the sum of its proper divisors (24134468594).

25717056430 is a wasteful number, since it uses less digits than its factorization.

25717056430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197823531.

The product of its (nonzero) digits is 176400, while the sum is 40.

It can be divided in two parts, 257170 and 56430, that added together give a square (313600 = 560²).

The spelling of 25717056430 in words is "twenty-five billion, seven hundred seventeen million, fifty-six thousand, four hundred thirty".