28537733433225 has 24 divisors (see below), whose sum is σ = 47350294824672. Its totient is φ = 15165960342400.

The previous prime is 28537733433109. The next prime is 28537733433227. The reversal of 28537733433225 is 52233433773582.

It is not a de Polignac number, because 28537733433225 - 2²⁷ = 28537599215497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28537733433227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 677030727 + ... + 677072876.

It is an arithmetic number, because the mean of its divisors is an integer number (1972928951028).

Almost surely, 2^{28537733433225} is an apocalyptic number.

28537733433225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28537733433225 is a deficient number, since it is larger than the sum of its proper divisors (18812561391447).

28537733433225 is a wasteful number, since it uses less digits than its factorization.

28537733433225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354103897 (or 1354103892 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 57.

The spelling of 28537733433225 in words is "twenty-eight trillion, five hundred thirty-seven billion, seven hundred thirty-three million, four hundred thirty-three thousand, two hundred twenty-five".