225442536 has 32 divisors (see below), whose sum is σ = 614844000. Its totient is φ = 68315840.

The previous prime is 225442501. The next prime is 225442561. The reversal of 225442536 is 635244522.

It is a happy number.

It is a super-2 number, since 2×225442536² = 101648674076222592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 225442497 and 225442506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426711 + ... + 427238.

It is an arithmetic number, because the mean of its divisors is an integer number (19213875).

Almost surely, 2^225442536 is an apocalyptic number.

It is an amenable number.

225442536 is an abundant number, since it is smaller than the sum of its proper divisors (389401464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225442536 is a wasteful number, since it uses less digits than its factorization.

225442536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853969 (or 853965 counting only the distinct ones).

The product of its digits is 57600, while the sum is 33.

The square root of 225442536 is about 15014.7439538608. The cubic root of 225442536 is about 608.6186929848.

The spelling of 225442536 in words is "two hundred twenty-five million, four hundred forty-two thousand, five hundred thirty-six".