87439225 has 12 divisors (see below), whose sum is σ = 109256400. Its totient is φ = 69414800.

The previous prime is 87439199. The next prime is 87439237. The reversal of 87439225 is 52293478.

It is not a de Polignac number, because 87439225 - 2¹¹ = 87437177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10075 + ... + 16624.

It is an arithmetic number, because the mean of its divisors is an integer number (9104700).

Almost surely, 2^87439225 is an apocalyptic number.

It is an amenable number.

87439225 is a deficient number, since it is larger than the sum of its proper divisors (21817175).

87439225 is a wasteful number, since it uses less digits than its factorization.

87439225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26840 (or 26835 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 87439225 is about 9350.8943422541. The cubic root of 87439225 is about 443.8491916063.

The spelling of 87439225 in words is "eighty-seven million, four hundred thirty-nine thousand, two hundred twenty-five".