85861725 has 12 divisors (see below), whose sum is σ = 141958176. Its totient is φ = 45792880.

The previous prime is 85861681. The next prime is 85861729. The reversal of 85861725 is 52716858.

It is not a de Polignac number, because 85861725 - 2¹⁵ = 85828957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85861729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 572337 + ... + 572486.

It is an arithmetic number, because the mean of its divisors is an integer number (11829848).

Almost surely, 2^85861725 is an apocalyptic number.

It is an amenable number.

85861725 is a deficient number, since it is larger than the sum of its proper divisors (56096451).

85861725 is a wasteful number, since it uses less digits than its factorization.

85861725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144836 (or 1144831 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 85861725 is about 9266.1602079826. The cubic root of 85861725 is about 441.1638009172.

The spelling of 85861725 in words is "eighty-five million, eight hundred sixty-one thousand, seven hundred twenty-five".