85425880 has 32 divisors (see below), whose sum is σ = 198838800. Its totient is φ = 32991616.

The previous prime is 85425829. The next prime is 85425883. The reversal of 85425880 is 8852458.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85425883) 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, 35662 + ... + 37981.

Almost surely, 2^85425880 is an apocalyptic number.

It is an amenable number.

85425880 is an abundant number, since it is smaller than the sum of its proper divisors (113412920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85425880 is a wasteful number, since it uses less digits than its factorization.

85425880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73683 (or 73679 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 40.

The square root of 85425880 is about 9242.6121848750. The cubic root of 85425880 is about 440.4160664962.

The spelling of 85425880 in words is "eighty-five million, four hundred twenty-five thousand, eight hundred eighty".