125504550 has 72 divisors (see below), whose sum is σ = 339922440. Its totient is φ = 33196800.

The previous prime is 125504531. The next prime is 125504551. The reversal of 125504550 is 55405521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125504551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 57886 + ... + 60014.

It is an arithmetic number, because the mean of its divisors is an integer number (4721145).

Almost surely, 2^125504550 is an apocalyptic number.

125504550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 125504550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169961220).

125504550 is an abundant number, since it is smaller than the sum of its proper divisors (214417890).

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

125504550 is a wasteful number, since it uses less digits than its factorization.

125504550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278 (or 2270 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 125504550 is about 11202.8813258019. The cubic root of 125504550 is about 500.6718302173.

The spelling of 125504550 in words is "one hundred twenty-five million, five hundred four thousand, five hundred fifty".