28622825475 has 48 divisors (see below), whose sum is σ = 48063590400. Its totient is φ = 15028300800.

The previous prime is 28622825471. The next prime is 28622825527. The reversal of 28622825475 is 57452822682.

It is not a de Polignac number, because 28622825475 - 2² = 28622825471 is a prime.

It is a super-2 number, since 2×28622825475² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28622825471) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1379226 + ... + 1399824.

It is an arithmetic number, because the mean of its divisors is an integer number (1001324800).

Almost surely, 2^28622825475 is an apocalyptic number.

28622825475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28622825475 is a deficient number, since it is larger than the sum of its proper divisors (19440764925).

28622825475 is a wasteful number, since it uses less digits than its factorization.

28622825475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20900 (or 20895 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 51.

The spelling of 28622825475 in words is "twenty-eight billion, six hundred twenty-two million, eight hundred twenty-five thousand, four hundred seventy-five".