125621865853 has 8 divisors (see below), whose sum is σ = 139364782560. Its totient is φ = 112266073680.

The previous prime is 125621865847. The next prime is 125621865883. The reversal of 125621865853 is 358568126521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125621865853 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 125621865853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125621865883) 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, 96780450 + ... + 96781747.

It is an arithmetic number, because the mean of its divisors is an integer number (17420597820).

Almost surely, 2^125621865853 is an apocalyptic number.

It is an amenable number.

125621865853 is a deficient number, since it is larger than the sum of its proper divisors (13742916707).

125621865853 is a wasteful number, since it uses less digits than its factorization.

125621865853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193562267.

The product of its digits is 3456000, while the sum is 52.

The spelling of 125621865853 in words is "one hundred twenty-five billion, six hundred twenty-one million, eight hundred sixty-five thousand, eight hundred fifty-three".