25251070628 has 36 divisors (see below), whose sum is σ = 53638929792. Its totient is φ = 10351368720.

The previous prime is 25251070627. The next prime is 25251070633. The reversal of 25251070628 is 82607015252.

It is a junction number, because it is equal to n+sod(n) for n = 25251070591 and 25251070600.

It is not an unprimeable number, because it can be changed into a prime (25251070627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2796188 + ... + 2805203.

It is an arithmetic number, because the mean of its divisors is an integer number (1489970272).

Almost surely, 2^25251070628 is an apocalyptic number.

25251070628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25251070628 is an abundant number, since it is smaller than the sum of its proper divisors (28387859164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25251070628 is a wasteful number, since it uses less digits than its factorization.

25251070628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5601432 (or 5601423 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 25251070628 in words is "twenty-five billion, two hundred fifty-one million, seventy thousand, six hundred twenty-eight".