225523537 has 2 divisors, whose sum is σ = 225523538. Its totient is φ = 225523536.

The previous prime is 225523511. The next prime is 225523577. The reversal of 225523537 is 735325522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224970001 + 553536 = 14999^2 + 744^2 .

It is a cyclic number.

It is not a de Polignac number, because 225523537 - 2⁷ = 225523409 is a prime.

It is not a weakly prime, because it can be changed into another prime (225523577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112761768 + 112761769.

It is an arithmetic number, because the mean of its divisors is an integer number (112761769).

Almost surely, 2^225523537 is an apocalyptic number.

It is an amenable number.

225523537 is a deficient number, since it is larger than the sum of its proper divisors (1).

225523537 is an equidigital number, since it uses as much as digits as its factorization.

225523537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 34.

The square root of 225523537 is about 15017.4410936085. The cubic root of 225523537 is about 608.6915760359.

The spelling of 225523537 in words is "two hundred twenty-five million, five hundred twenty-three thousand, five hundred thirty-seven".