85687025 has 12 divisors (see below), whose sum is σ = 109916700. Its totient is φ = 66185280.

The previous prime is 85687013. The next prime is 85687051. The reversal of 85687025 is 52078658.

It can be written as a sum of positive squares in 6 ways, for example, as 2202256 + 83484769 = 1484^2 + 9137^2 .

It is not a de Polignac number, because 85687025 - 2⁴ = 85687009 is a prime.

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, 58370 + ... + 59819.

It is an arithmetic number, because the mean of its divisors is an integer number (9159725).

Almost surely, 2^85687025 is an apocalyptic number.

It is an amenable number.

85687025 is a deficient number, since it is larger than the sum of its proper divisors (24229675).

85687025 is a wasteful number, since it uses less digits than its factorization.

85687025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118228 (or 118223 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 85687025 is about 9256.7286338101. The cubic root of 85687025 is about 440.8643906477.

The spelling of 85687025 in words is "eighty-five million, six hundred eighty-seven thousand, twenty-five".