125552550 has 24 divisors (see below), whose sum is σ = 311370696. Its totient is φ = 33480640.

The previous prime is 125552549. The next prime is 125552563. The reversal of 125552550 is 55255521.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 418359 + ... + 418658.

It is an arithmetic number, because the mean of its divisors is an integer number (12973779).

Almost surely, 2^125552550 is an apocalyptic number.

125552550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125552550 is an abundant number, since it is smaller than the sum of its proper divisors (185818146).

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

125552550 is a wasteful number, since it uses less digits than its factorization.

125552550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837032 (or 837027 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 125552550 is about 11205.0234270170. The cubic root of 125552550 is about 500.7356504394.

The spelling of 125552550 in words is "one hundred twenty-five million, five hundred fifty-two thousand, five hundred fifty".