125668913569 has 8 divisors (see below), whose sum is σ = 126963326592. Its totient is φ = 124375484400.

The previous prime is 125668913563. The next prime is 125668913639. The reversal of 125668913569 is 965319866521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125668913569 - 2¹³ = 125668905377 is a prime.

It is a super-2 number, since 2×125668913569² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125668913563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12202 + ... + 501484.

It is an arithmetic number, because the mean of its divisors is an integer number (15870415824).

Almost surely, 2^125668913569 is an apocalyptic number.

It is an amenable number.

125668913569 is a deficient number, since it is larger than the sum of its proper divisors (1294413023).

125668913569 is a wasteful number, since it uses less digits than its factorization.

125668913569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491927.

The product of its digits is 20995200, while the sum is 61.

The spelling of 125668913569 in words is "one hundred twenty-five billion, six hundred sixty-eight million, nine hundred thirteen thousand, five hundred sixty-nine".