85613725 has 6 divisors (see below), whose sum is σ = 106161050. Its totient is φ = 68490960.

The previous prime is 85613707. The next prime is 85613767. The reversal of 85613725 is 52731658.

It can be written as a sum of positive squares in 3 ways, for example, as 6563844 + 79049881 = 2562^2 + 8891^2 .

It is a de Polignac number, because none of the positive numbers 2^k-85613725 is a prime.

It is a congruent 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, 1712250 + ... + 1712299.

Almost surely, 2^85613725 is an apocalyptic number.

It is an amenable number.

85613725 is a deficient number, since it is larger than the sum of its proper divisors (20547325).

85613725 is a wasteful number, since it uses less digits than its factorization.

85613725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424559 (or 3424554 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 85613725 is about 9252.7685046153. The cubic root of 85613725 is about 440.7386439596.

The spelling of 85613725 in words is "eighty-five million, six hundred thirteen thousand, seven hundred twenty-five".