125147044981 has 32 divisors (see below), whose sum is σ = 151024566272. Its totient is φ = 101452538880.

The previous prime is 125147044951. The next prime is 125147044993. The reversal of 125147044981 is 189440741521.

It is not a de Polignac number, because 125147044981 - 2⁷ = 125147044853 is a prime.

It is a super-2 number, since 2×125147044981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125147044931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1812565 + ... + 1880341.

It is an arithmetic number, because the mean of its divisors is an integer number (4719517696).

Almost surely, 2^125147044981 is an apocalyptic number.

It is an amenable number.

125147044981 is a deficient number, since it is larger than the sum of its proper divisors (25877521291).

125147044981 is a wasteful number, since it uses less digits than its factorization.

125147044981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68009.

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 125147044981 in words is "one hundred twenty-five billion, one hundred forty-seven million, forty-four thousand, nine hundred eighty-one".