125445900 has 72 divisors (see below), whose sum is σ = 364532224. Its totient is φ = 33307200.

The previous prime is 125445883. The next prime is 125445911. The reversal of 125445900 is 9544521.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80529 + ... + 82071.

Almost surely, 2^125445900 is an apocalyptic number.

125445900 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 125445900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182266112).

125445900 is an abundant number, since it is smaller than the sum of its proper divisors (239086324).

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

125445900 is a wasteful number, since it uses less digits than its factorization.

125445900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831 (or 1824 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 125445900 is about 11200.2633897601. The cubic root of 125445900 is about 500.5938277912.

The spelling of 125445900 in words is "one hundred twenty-five million, four hundred forty-five thousand, nine hundred".