85725757 has 12 divisors (see below), whose sum is σ = 95827584. Its totient is φ = 76574160.

The previous prime is 85725749. The next prime is 85725797. The reversal of 85725757 is 75752758.

It is not a de Polignac number, because 85725757 - 2³ = 85725749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85725737) 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, 2943 + ... + 13420.

It is an arithmetic number, because the mean of its divisors is an integer number (7985632).

Almost surely, 2^85725757 is an apocalyptic number.

It is an amenable number.

85725757 is a deficient number, since it is larger than the sum of its proper divisors (10101827).

85725757 is a wasteful number, since it uses less digits than its factorization.

85725757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16420 (or 16407 counting only the distinct ones).

The product of its digits is 686000, while the sum is 46.

The square root of 85725757 is about 9258.8204972340. The cubic root of 85725757 is about 440.9308067218.

The spelling of 85725757 in words is "eighty-five million, seven hundred twenty-five thousand, seven hundred fifty-seven".