28290110625 has 200 divisors, whose sum is σ = 61049158016. Its totient is φ = 12783744000.

The previous prime is 28290110621. The next prime is 28290110627. The reversal of 28290110625 is 52601109282.

28290110625 is a `hidden beast` number, since 2 + 8 + 29 + 0 + 1 + 1 + 0 + 625 = 666.

It is not a de Polignac number, because 28290110625 - 2² = 28290110621 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28290110625.

It is not an unprimeable number, because it can be changed into a prime (28290110621) by changing a digit.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 34373964 + ... + 34374786.

Almost surely, 2^28290110625 is an apocalyptic number.

28290110625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28290110625 is an abundant number, since it is smaller than the sum of its proper divisors (32759047391).

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

28290110625 is an frugal number, since it uses more digits than its factorization.

28290110625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 28290110625 in words is "twenty-eight billion, two hundred ninety million, one hundred ten thousand, six hundred twenty-five".