85125390 has 64 divisors (see below), whose sum is σ = 234261504. Its totient is φ = 19392768.

The previous prime is 85125371. The next prime is 85125421. The reversal of 85125390 is 9352158.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95527 + ... + 96413.

It is an arithmetic number, because the mean of its divisors is an integer number (3660336).

Almost surely, 2^85125390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85125390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117130752).

85125390 is an abundant number, since it is smaller than the sum of its proper divisors (149136114).

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

85125390 is a wasteful number, since it uses less digits than its factorization.

85125390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 85125390 is about 9226.3421787835. The cubic root of 85125390 is about 439.8990643128.

The spelling of 85125390 in words is "eighty-five million, one hundred twenty-five thousand, three hundred ninety".