87612225 has 24 divisors (see below), whose sum is σ = 146901312. Its totient is φ = 46065600.

The previous prime is 87612209. The next prime is 87612229. The reversal of 87612225 is 52221678.

It is not a de Polignac number, because 87612225 - 2⁴ = 87612209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87612229) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2902 + ... + 13551.

It is an arithmetic number, because the mean of its divisors is an integer number (6120888).

Almost surely, 2^87612225 is an apocalyptic number.

It is an amenable number.

87612225 is a deficient number, since it is larger than the sum of its proper divisors (59289087).

87612225 is a wasteful number, since it uses less digits than its factorization.

87612225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16537 (or 16532 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 87612225 is about 9360.1402233086. The cubic root of 87612225 is about 444.1417198357.

The spelling of 87612225 in words is "eighty-seven million, six hundred twelve thousand, two hundred twenty-five".