125351103440 has 80 divisors (see below), whose sum is σ = 309518314560. Its totient is φ = 47048263680.

The previous prime is 125351103413. The next prime is 125351103509. The reversal of 125351103440 is 44301153521.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310931 + ... + 589389.

It is an arithmetic number, because the mean of its divisors is an integer number (3868978932).

Almost surely, 2^125351103440 is an apocalyptic number.

125351103440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125351103440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154759157280).

125351103440 is an abundant number, since it is smaller than the sum of its proper divisors (184167211120).

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

125351103440 is a wasteful number, since it uses less digits than its factorization.

125351103440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278820 (or 278814 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 125351103440 its reverse (44301153521), we get a palindrome (169652256961).

The spelling of 125351103440 in words is "one hundred twenty-five billion, three hundred fifty-one million, one hundred three thousand, four hundred forty".