125105133550 has 12 divisors (see below), whose sum is σ = 232695548496. Its totient is φ = 50042053400.

The previous prime is 125105133521. The next prime is 125105133707. The reversal of 125105133550 is 55331501521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1251051286 + ... + 1251051385.

It is an arithmetic number, because the mean of its divisors is an integer number (19391295708).

Almost surely, 2^125105133550 is an apocalyptic number.

125105133550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125105133550 is a deficient number, since it is larger than the sum of its proper divisors (107590414946).

125105133550 is a wasteful number, since it uses less digits than its factorization.

125105133550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502102683 (or 2502102678 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 31.

The spelling of 125105133550 in words is "one hundred twenty-five billion, one hundred five million, one hundred thirty-three thousand, five hundred fifty".