125020664664365 has 32 divisors (see below), whose sum is σ = 161283420587520. Its totient is φ = 92735019224064.

The previous prime is 125020664664361. The next prime is 125020664664391. The reversal of 125020664664365 is 563466466020521.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 125020664664365 - 2² = 125020664664361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125020664664365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125020664664361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338499077 + ... + 338868213.

It is an arithmetic number, because the mean of its divisors is an integer number (5040106893360).

Almost surely, 2^{125020664664365} is an apocalyptic number.

It is an amenable number.

125020664664365 is a deficient number, since it is larger than the sum of its proper divisors (36262755923155).

125020664664365 is a wasteful number, since it uses less digits than its factorization.

125020664664365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445061.

The product of its (nonzero) digits is 37324800, while the sum is 56.

The spelling of 125020664664365 in words is "one hundred twenty-five trillion, twenty billion, six hundred sixty-four million, six hundred sixty-four thousand, three hundred sixty-five".