225513812 has 36 divisors (see below), whose sum is σ = 423732960. Its totient is φ = 104972112.

The previous prime is 225513811. The next prime is 225513829. The reversal of 225513812 is 218315522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225513811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83873 + ... + 86519.

It is an arithmetic number, because the mean of its divisors is an integer number (11770360).

Almost surely, 2^225513812 is an apocalyptic number.

It is an amenable number.

225513812 is a deficient number, since it is larger than the sum of its proper divisors (198219148).

225513812 is a wasteful number, since it uses less digits than its factorization.

225513812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748 (or 2727 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 225513812 is about 15017.1172999348. The cubic root of 225513812 is about 608.6828266008.

The spelling of 225513812 in words is "two hundred twenty-five million, five hundred thirteen thousand, eight hundred twelve".