85717425 has 24 divisors (see below), whose sum is σ = 144740736. Its totient is φ = 44741440.

The previous prime is 85717421. The next prime is 85717427. The reversal of 85717425 is 52471758.

It is not a de Polignac number, because 85717425 - 2² = 85717421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85717421) 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, 8634 + ... + 15683.

It is an arithmetic number, because the mean of its divisors is an integer number (6030864).

Almost surely, 2^85717425 is an apocalyptic number.

It is an amenable number.

85717425 is a deficient number, since it is larger than the sum of its proper divisors (59023311).

85717425 is a wasteful number, since it uses less digits than its factorization.

85717425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24377 (or 24372 counting only the distinct ones).

The product of its digits is 78400, while the sum is 39.

The square root of 85717425 is about 9258.3705369790. The cubic root of 85717425 is about 440.9165210328.

The spelling of 85717425 in words is "eighty-five million, seven hundred seventeen thousand, four hundred twenty-five".