85125981 has 8 divisors (see below), whose sum is σ = 113547040. Its totient is φ = 56727792.

The previous prime is 85125973. The next prime is 85125983. The reversal of 85125981 is 18952158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85125981 - 2³ = 85125973 is a prime.

It is a super-2 number, since 2×85125981² = 14492865282424722, 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 (85125983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7035 + ... + 14823.

It is an arithmetic number, because the mean of its divisors is an integer number (14193380).

Almost surely, 2^85125981 is an apocalyptic number.

It is an amenable number.

85125981 is a deficient number, since it is larger than the sum of its proper divisors (28421059).

85125981 is a wasteful number, since it uses less digits than its factorization.

85125981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11435.

The product of its digits is 28800, while the sum is 39.

The square root of 85125981 is about 9226.3742065884. The cubic root of 85125981 is about 439.9000823394.

The spelling of 85125981 in words is "eighty-five million, one hundred twenty-five thousand, nine hundred eighty-one".