125515000 has 80 divisors (see below), whose sum is σ = 316867320. Its totient is φ = 46320000.

The previous prime is 125514943. The next prime is 125515021. The reversal of 125515000 is 515521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64035 + ... + 65965.

Almost surely, 2^125515000 is an apocalyptic number.

125515000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125515000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158433660).

125515000 is an abundant number, since it is smaller than the sum of its proper divisors (191352320).

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

125515000 is a wasteful number, since it uses less digits than its factorization.

125515000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970 (or 1951 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 125515000 is about 11203.3477139648. The cubic root of 125515000 is about 500.6857257970.

The spelling of 125515000 in words is "one hundred twenty-five million, five hundred fifteen thousand".