28227227625 has 64 divisors (see below), whose sum is σ = 52336627200. Its totient is φ = 15011942400.

The previous prime is 28227227593. The next prime is 28227227671. The reversal of 28227227625 is 52672272282.

It is not a de Polignac number, because 28227227625 - 2⁵ = 28227227593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1199977 + ... + 1223273.

It is an arithmetic number, because the mean of its divisors is an integer number (817759800).

Almost surely, 2^28227227625 is an apocalyptic number.

28227227625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28227227625 is a deficient number, since it is larger than the sum of its proper divisors (24109399575).

28227227625 is a wasteful number, since it uses less digits than its factorization.

28227227625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23680 (or 23664 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The spelling of 28227227625 in words is "twenty-eight billion, two hundred twenty-seven million, two hundred twenty-seven thousand, six hundred twenty-five".