225261536 has 24 divisors (see below), whose sum is σ = 447635160. Its totient is φ = 111576448.

The previous prime is 225261521. The next prime is 225261541. The reversal of 225261536 is 635162522.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29471 + ... + 36318.

It is an arithmetic number, because the mean of its divisors is an integer number (18651465).

Almost surely, 2^225261536 is an apocalyptic number.

It is an amenable number.

225261536 is a deficient number, since it is larger than the sum of its proper divisors (222373624).

225261536 is a wasteful number, since it uses less digits than its factorization.

225261536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65906 (or 65898 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 225261536 is about 15008.7153347647. The cubic root of 225261536 is about 608.4557697558.

The spelling of 225261536 in words is "two hundred twenty-five million, two hundred sixty-one thousand, five hundred thirty-six".