25712818625 has 32 divisors (see below), whose sum is σ = 35044918272. Its totient is φ = 18720408000.

The previous prime is 25712818589. The next prime is 25712818633. The reversal of 25712818625 is 52681821752.

It is a de Polignac number, because none of the positive numbers 2^k-25712818625 is a prime.

It is a super-2 number, since 2×25712818625² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25712818625.

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, 3944 + ... + 226806.

It is an arithmetic number, because the mean of its divisors is an integer number (1095153696).

Almost surely, 2^25712818625 is an apocalyptic number.

25712818625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25712818625 is a deficient number, since it is larger than the sum of its proper divisors (9332099647).

25712818625 is a wasteful number, since it uses less digits than its factorization.

25712818625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222962 (or 222952 counting only the distinct ones).

The product of its digits is 537600, while the sum is 47.

The spelling of 25712818625 in words is "twenty-five billion, seven hundred twelve million, eight hundred eighteen thousand, six hundred twenty-five".