87220325 has 12 divisors (see below), whose sum is σ = 110792388. Its totient is φ = 68073600.

The previous prime is 87220277. The next prime is 87220333. The reversal of 87220325 is 52302278.

It can be written as a sum of positive squares in 6 ways, for example, as 21836929 + 65383396 = 4673^2 + 8086^2 .

It is not a de Polignac number, because 87220325 - 2¹² = 87216229 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 41522 + ... + 43571.

It is an arithmetic number, because the mean of its divisors is an integer number (9232699).

Almost surely, 2^87220325 is an apocalyptic number.

It is an amenable number.

87220325 is a deficient number, since it is larger than the sum of its proper divisors (23572063).

87220325 is a wasteful number, since it uses less digits than its factorization.

87220325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85144 (or 85139 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 87220325 is about 9339.1822447150. The cubic root of 87220325 is about 443.4784968816.

The spelling of 87220325 in words is "eighty-seven million, two hundred twenty thousand, three hundred twenty-five".