125740643744 has 24 divisors (see below), whose sum is σ = 247633595748. Its totient is φ = 62849571840.

The previous prime is 125740643713. The next prime is 125740643767. The reversal of 125740643744 is 447346047521.

It can be written as a sum of positive squares in 2 ways, for example, as 117278851600 + 8461792144 = 342460^2 + 91988^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549737 + ... + 744104.

Almost surely, 2^125740643744 is an apocalyptic number.

It is an amenable number.

125740643744 is a deficient number, since it is larger than the sum of its proper divisors (121892952004).

125740643744 is a wasteful number, since it uses less digits than its factorization.

125740643744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296888 (or 1296880 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 47.

The spelling of 125740643744 in words is "one hundred twenty-five billion, seven hundred forty million, six hundred forty-three thousand, seven hundred forty-four".