125271757920 has 48 divisors (see below), whose sum is σ = 394606038960. Its totient is φ = 33405801984.

The previous prime is 125271757903. The next prime is 125271757921. The reversal of 125271757920 is 29757172521.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 125271757920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125271757921) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 130490935 + ... + 130491894.

It is an arithmetic number, because the mean of its divisors is an integer number (8220959145).

Almost surely, 2^125271757920 is an apocalyptic number.

125271757920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125271757920 is an abundant number, since it is smaller than the sum of its proper divisors (269334281040).

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

125271757920 is a wasteful number, since it uses less digits than its factorization.

125271757920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260982847 (or 260982839 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 48.

The spelling of 125271757920 in words is "one hundred twenty-five billion, two hundred seventy-one million, seven hundred fifty-seven thousand, nine hundred twenty".