657224225 has 24 divisors (see below), whose sum is σ = 934106880. Its totient is φ = 449349120.

The previous prime is 657224167. The next prime is 657224291. The reversal of 657224225 is 522422756.

It is a happy number.

It is not a de Polignac number, because 657224225 - 2⁸ = 657223969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56456 + ... + 67094.

It is an arithmetic number, because the mean of its divisors is an integer number (38921120).

Almost surely, 2^657224225 is an apocalyptic number.

It is an amenable number.

657224225 is a deficient number, since it is larger than the sum of its proper divisors (276882655).

657224225 is a wasteful number, since it uses less digits than its factorization.

657224225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11009 (or 11004 counting only the distinct ones).

The product of its digits is 67200, while the sum is 35.

The square root of 657224225 is about 25636.3847880312. The cubic root of 657224225 is about 869.4364717209.

The spelling of 657224225 in words is "six hundred fifty-seven million, two hundred twenty-four thousand, two hundred twenty-five".