125000550 has 48 divisors (see below), whose sum is σ = 344449680. Its totient is φ = 33333120.

The previous prime is 125000549. The next prime is 125000597. The reversal of 125000550 is 55000521.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 44947 + ... + 47646.

It is an arithmetic number, because the mean of its divisors is an integer number (7176035).

Almost surely, 2^125000550 is an apocalyptic number.

125000550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125000550 is an abundant number, since it is smaller than the sum of its proper divisors (219449130).

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

125000550 is a wasteful number, since it uses less digits than its factorization.

125000550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92614 (or 92603 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 125000550 is about 11180.3644842196. The cubic root of 125000550 is about 500.0007333323. Note that the first 3 decimals are identical.

The spelling of 125000550 in words is "one hundred twenty-five million, five hundred fifty", and thus it is an aban number.