85425877 has 4 divisors (see below), whose sum is σ = 87037740. Its totient is φ = 83814016.

The previous prime is 85425829. The next prime is 85425883. The reversal of 85425877 is 77852458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77852458 = 2 ⋅38926229.

It can be written as a sum of positive squares in 2 ways, for example, as 32558436 + 52867441 = 5706^2 + 7271^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85425877 is a prime.

It is a super-2 number, since 2×85425877² = 14595160922438258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85425817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805852 + ... + 805957.

It is an arithmetic number, because the mean of its divisors is an integer number (21759435).

Almost surely, 2^85425877 is an apocalyptic number.

It is an amenable number.

85425877 is a deficient number, since it is larger than the sum of its proper divisors (1611863).

85425877 is a wasteful number, since it uses less digits than its factorization.

85425877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611862.

The product of its digits is 627200, while the sum is 46.

The square root of 85425877 is about 9242.6120225832. The cubic root of 85425877 is about 440.4160613407.

The spelling of 85425877 in words is "eighty-five million, four hundred twenty-five thousand, eight hundred seventy-seven".