225187916 has 12 divisors (see below), whose sum is σ = 417260088. Its totient is φ = 105970752.

The previous prime is 225187909. The next prime is 225187939. The reversal of 225187916 is 619781522.

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, 1655726 + ... + 1655861.

It is an arithmetic number, because the mean of its divisors is an integer number (34771674).

Almost surely, 2^225187916 is an apocalyptic number.

It is an amenable number.

225187916 is a deficient number, since it is larger than the sum of its proper divisors (192072172).

225187916 is a wasteful number, since it uses less digits than its factorization.

225187916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311608 (or 3311606 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 225187916 is about 15006.2625593450. The cubic root of 225187916 is about 608.3894773394.

The spelling of 225187916 in words is "two hundred twenty-five million, one hundred eighty-seven thousand, nine hundred sixteen".