125681570559 has 6 divisors (see below), whose sum is σ = 181540046376. Its totient is φ = 83787713700.

The previous prime is 125681570533. The next prime is 125681570647. The reversal of 125681570559 is 955075186521.

125681570559 is a `hidden beast` number, since 1 + 2 + 5 + 6 + 8 + 15 + 70 + 559 = 666.

It is not a de Polignac number, because 125681570559 - 2⁵ = 125681570527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125681571559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6982309467 + ... + 6982309484.

It is an arithmetic number, because the mean of its divisors is an integer number (30256674396).

Almost surely, 2^125681570559 is an apocalyptic number.

125681570559 is a deficient number, since it is larger than the sum of its proper divisors (55858475817).

125681570559 is a wasteful number, since it uses less digits than its factorization.

125681570559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13964618957 (or 13964618954 counting only the distinct ones).

The product of its (nonzero) digits is 3780000, while the sum is 54.

The spelling of 125681570559 in words is "one hundred twenty-five billion, six hundred eighty-one million, five hundred seventy thousand, five hundred fifty-nine".