28025000555 has 16 divisors (see below), whose sum is σ = 35104656960. Its totient is φ = 21437589888.

The previous prime is 28025000537. The next prime is 28025000561. The reversal of 28025000555 is 55500052082.

It is a cyclic number.

It is not a de Polignac number, because 28025000555 - 2⁶ = 28025000491 is a prime.

It is a super-2 number, since 2×28025000555² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292649 + ... + 376421.

It is an arithmetic number, because the mean of its divisors is an integer number (2194041060).

Almost surely, 2^28025000555 is an apocalyptic number.

28025000555 is a deficient number, since it is larger than the sum of its proper divisors (7079656405).

28025000555 is a wasteful number, since it uses less digits than its factorization.

28025000555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86710.

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 28025000555 in words is "twenty-eight billion, twenty-five million, five hundred fifty-five", and thus it is an aban number.