127521703254725 has 24 divisors (see below), whose sum is σ = 172623267544392. Its totient is φ = 92879874892800.

The previous prime is 127521703254719. The next prime is 127521703254773. The reversal of 127521703254725 is 527452307125721.

It can be written as a sum of positive squares in 12 ways, for example, as 28119168168001 + 99402535086724 = 5302751^2 + 9970082^2 .

It is not a de Polignac number, because 127521703254725 - 2¹⁰ = 127521703253701 is a prime.

It is a super-2 number, since 2×127521703254725² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2687472656 + ... + 2687520105.

It is an arithmetic number, because the mean of its divisors is an integer number (7192636147683).

Almost surely, 2^{127521703254725} is an apocalyptic number.

It is an amenable number.

127521703254725 is a deficient number, since it is larger than the sum of its proper divisors (45101564289667).

127521703254725 is a wasteful number, since it uses less digits than its factorization.

127521703254725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374992857 (or 5374992852 counting only the distinct ones).

The product of its (nonzero) digits is 8232000, while the sum is 53.

The spelling of 127521703254725 in words is "one hundred twenty-seven trillion, five hundred twenty-one billion, seven hundred three million, two hundred fifty-four thousand, seven hundred twenty-five".