125305590 has 32 divisors (see below), whose sum is σ = 305667936. Its totient is φ = 32866560.

The previous prime is 125305559. The next prime is 125305591. The reversal of 125305590 is 95503521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125305591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32407 + ... + 36066.

It is an arithmetic number, because the mean of its divisors is an integer number (9552123).

Almost surely, 2^125305590 is an apocalyptic number.

125305590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125305590 is an abundant number, since it is smaller than the sum of its proper divisors (180362346).

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

125305590 is a wasteful number, since it uses less digits than its factorization.

125305590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68544.

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 125305590 is about 11193.9979453277. The cubic root of 125305590 is about 500.4071217471.

The spelling of 125305590 in words is "one hundred twenty-five million, three hundred five thousand, five hundred ninety".