125669128451 has 8 divisors (see below), whose sum is σ = 125767138320. Its totient is φ = 125571162112.

The previous prime is 125669128399. The next prime is 125669128471. The reversal of 125669128451 is 154821966521.

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 125669128451 - 2³⁰ = 124595386627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125669128451.

It is not an unprimeable number, because it can be changed into a prime (125669128471) 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, 7752611 + ... + 7768803.

It is an arithmetic number, because the mean of its divisors is an integer number (15720892290).

Almost surely, 2^125669128451 is an apocalyptic number.

125669128451 is a deficient number, since it is larger than the sum of its proper divisors (98009869).

125669128451 is a wasteful number, since it uses less digits than its factorization.

125669128451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21765.

The product of its digits is 1036800, while the sum is 50.

The spelling of 125669128451 in words is "one hundred twenty-five billion, six hundred sixty-nine million, one hundred twenty-eight thousand, four hundred fifty-one".