125565550 has 24 divisors (see below), whose sum is σ = 254785032. Its totient is φ = 45660000.

The previous prime is 125565521. The next prime is 125565551. The reversal of 125565550 is 55565521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125565551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113601 + ... + 114700.

It is an arithmetic number, because the mean of its divisors is an integer number (10616043).

Almost surely, 2^125565550 is an apocalyptic number.

125565550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125565550 is an abundant number, since it is smaller than the sum of its proper divisors (129219482).

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

125565550 is a wasteful number, since it uses less digits than its factorization.

125565550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228324 (or 228319 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 34.

The square root of 125565550 is about 11205.6035089593. The cubic root of 125565550 is about 500.7529322835.

The spelling of 125565550 in words is "one hundred twenty-five million, five hundred sixty-five thousand, five hundred fifty".