87835725 has 24 divisors (see below), whose sum is σ = 161358720. Its totient is φ = 46845360.

The previous prime is 87835723. The next prime is 87835739. The reversal of 87835725 is 52753878.

87835725 is a `hidden beast` number, since 8 + 78 + 3 + 572 + 5 = 666.

It is not a de Polignac number, because 87835725 - 2¹ = 87835723 is a prime.

It is a super-2 number, since 2×87835725² = 15430229172551250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87835721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64389 + ... + 65738.

It is an arithmetic number, because the mean of its divisors is an integer number (6723280).

Almost surely, 2^87835725 is an apocalyptic number.

It is an amenable number.

87835725 is a deficient number, since it is larger than the sum of its proper divisors (73522995).

87835725 is a wasteful number, since it uses less digits than its factorization.

87835725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130146 (or 130135 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 87835725 is about 9372.0715426207. The cubic root of 87835725 is about 444.5190697030.

The spelling of 87835725 in words is "eighty-seven million, eight hundred thirty-five thousand, seven hundred twenty-five".