125273776440 has 64 divisors (see below), whose sum is σ = 376718428800. Its totient is φ = 33326598272.

The previous prime is 125273776403. The next prime is 125273776517. The reversal of 125273776440 is 44677372521.

It is a self number, because there is not a number n which added to its sum of digits gives 125273776440.

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, 1195482 + ... + 1296041.

It is an arithmetic number, because the mean of its divisors is an integer number (5886225450).

Almost surely, 2^125273776440 is an apocalyptic number.

125273776440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125273776440 is an abundant number, since it is smaller than the sum of its proper divisors (251444652360).

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

125273776440 is a wasteful number, since it uses less digits than its factorization.

125273776440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491956 (or 2491952 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 48.

The spelling of 125273776440 in words is "one hundred twenty-five billion, two hundred seventy-three million, seven hundred seventy-six thousand, four hundred forty".