225187956 has 36 divisors (see below), whose sum is σ = 650543712. Its totient is φ = 64339344.

The previous prime is 225187939. The next prime is 225187969. The reversal of 225187956 is 659781522.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 446550 + ... + 447053.

Almost surely, 2^225187956 is an apocalyptic number.

It is an amenable number.

225187956 is an abundant number, since it is smaller than the sum of its proper divisors (425355756).

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

225187956 is a wasteful number, since it uses less digits than its factorization.

225187956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893620 (or 893615 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 225187956 is about 15006.2638921218. The cubic root of 225187956 is about 608.3895133621.

The spelling of 225187956 in words is "two hundred twenty-five million, one hundred eighty-seven thousand, nine hundred fifty-six".