25251000128 has 56 divisors (see below), whose sum is σ = 50453239200. Its totient is φ = 12538575360.

The previous prime is 25251000113. The next prime is 25251000149. The reversal of 25251000128 is 82100015252.

It is a super-2 number, since 2×25251000128² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25251000097 and 25251000106.

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, 14861423 + ... + 14863121.

It is an arithmetic number, because the mean of its divisors is an integer number (900950700).

Almost surely, 2^25251000128 is an apocalyptic number.

It is an amenable number.

25251000128 is a deficient number, since it is larger than the sum of its proper divisors (25202239072).

25251000128 is a wasteful number, since it uses less digits than its factorization.

25251000128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3175 (or 3165 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 25251000128 in words is "twenty-five billion, two hundred fifty-one million, one hundred twenty-eight", and thus it is an aban number.