125500110550 has 12 divisors (see below), whose sum is σ = 233430205716. Its totient is φ = 50200044200.

The previous prime is 125500110509. The next prime is 125500110557. The reversal of 125500110550 is 55011005521.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125500110557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1255001056 + ... + 1255001155.

It is an arithmetic number, because the mean of its divisors is an integer number (19452517143).

Almost surely, 2^125500110550 is an apocalyptic number.

125500110550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125500110550 is a deficient number, since it is larger than the sum of its proper divisors (107930095166).

125500110550 is a wasteful number, since it uses less digits than its factorization.

125500110550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510002223 (or 2510002218 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 25.

The spelling of 125500110550 in words is "one hundred twenty-five billion, five hundred million, one hundred ten thousand, five hundred fifty".