125013155440 has 80 divisors (see below), whose sum is σ = 306028404000. Its totient is φ = 47361770496.

The previous prime is 125013155413. The next prime is 125013155453. The reversal of 125013155440 is 44551310521.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8585286 + ... + 8599834.

It is an arithmetic number, because the mean of its divisors is an integer number (3825355050).

Almost surely, 2^125013155440 is an apocalyptic number.

125013155440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125013155440 is an abundant number, since it is smaller than the sum of its proper divisors (181015248560).

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

125013155440 is a wasteful number, since it uses less digits than its factorization.

125013155440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20234 (or 20228 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 125013155440 its reverse (44551310521), we get a palindrome (169564465961).

The spelling of 125013155440 in words is "one hundred twenty-five billion, thirteen million, one hundred fifty-five thousand, four hundred forty".