87513425 has 6 divisors (see below), whose sum is σ = 108516678. Its totient is φ = 70010720.

The previous prime is 87513397. The next prime is 87513431. The reversal of 87513425 is 52431578.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 781456 + 86731969 = 884^2 + 9313^2 .

It is not a de Polignac number, because 87513425 - 2¹⁴ = 87497041 is a prime.

It is a super-3 number, since 3×87513425³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1750244 + ... + 1750293.

It is an arithmetic number, because the mean of its divisors is an integer number (18086113).

Almost surely, 2^87513425 is an apocalyptic number.

It is an amenable number.

87513425 is a deficient number, since it is larger than the sum of its proper divisors (21003253).

87513425 is a wasteful number, since it uses less digits than its factorization.

87513425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500547 (or 3500542 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 87513425 is about 9354.8610358466. The cubic root of 87513425 is about 443.9747046840.

The spelling of 87513425 in words is "eighty-seven million, five hundred thirteen thousand, four hundred twenty-five".