125126277640 has 128 divisors (see below), whose sum is σ = 364740768000. Its totient is φ = 37516151808.

The previous prime is 125126277599. The next prime is 125126277667. The reversal of 125126277640 is 46772621521.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 835455 + ... + 973774.

It is an arithmetic number, because the mean of its divisors is an integer number (2849537250).

Almost surely, 2^125126277640 is an apocalyptic number.

125126277640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125126277640 is an abundant number, since it is smaller than the sum of its proper divisors (239614490360).

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

125126277640 is a wasteful number, since it uses less digits than its factorization.

125126277640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809279 (or 1809275 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 125126277640 in words is "one hundred twenty-five billion, one hundred twenty-six million, two hundred seventy-seven thousand, six hundred forty".