85125428 has 6 divisors (see below), whose sum is σ = 148969506. Its totient is φ = 42562712.

The previous prime is 85125421. The next prime is 85125431. The reversal of 85125428 is 82452158.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 82228624 + 2896804 = 9068^2 + 1702^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85125421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10640675 + ... + 10640682.

It is an arithmetic number, because the mean of its divisors is an integer number (24828251).

Almost surely, 2^85125428 is an apocalyptic number.

It is an amenable number.

85125428 is a deficient number, since it is larger than the sum of its proper divisors (63844078).

85125428 is a wasteful number, since it uses less digits than its factorization.

85125428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21281361 (or 21281359 counting only the distinct ones).

The product of its digits is 25600, while the sum is 35.

The square root of 85125428 is about 9226.3442381043. The cubic root of 85125428 is about 439.8991297698.

The spelling of 85125428 in words is "eighty-five million, one hundred twenty-five thousand, four hundred twenty-eight".