85725507 has 16 divisors (see below), whose sum is σ = 132285440. Its totient is φ = 48364992.

The previous prime is 85725503. The next prime is 85725533. The reversal of 85725507 is 70552758.

It is not a de Polignac number, because 85725507 - 2² = 85725503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85725503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24178 + ... + 27495.

It is an arithmetic number, because the mean of its divisors is an integer number (8267840).

Almost surely, 2^85725507 is an apocalyptic number.

85725507 is a deficient number, since it is larger than the sum of its proper divisors (46559933).

85725507 is a wasteful number, since it uses less digits than its factorization.

85725507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51762.

The product of its (nonzero) digits is 98000, while the sum is 39.

The square root of 85725507 is about 9258.8069965844. The cubic root of 85725507 is about 440.9303780960.

The spelling of 85725507 in words is "eighty-five million, seven hundred twenty-five thousand, five hundred seven".