125137500 has 144 divisors (see below), whose sum is σ = 377975808. Its totient is φ = 32200000.

The previous prime is 125137499. The next prime is 125137511. The reversal of 125137500 is 5731521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1762465 + ... + 1762535.

It is an arithmetic number, because the mean of its divisors is an integer number (2624832).

Almost surely, 2^125137500 is an apocalyptic number.

125137500 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 125137500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188987904).

125137500 is an abundant number, since it is smaller than the sum of its proper divisors (252838308).

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

125137500 is an equidigital number, since it uses as much as digits as its factorization.

125137500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 125137500 is about 11186.4873843401. The cubic root of 125137500 is about 500.1832661522.

The spelling of 125137500 in words is "one hundred twenty-five million, one hundred thirty-seven thousand, five hundred".