125503549101568 has 80 divisors (see below), whose sum is σ = 275236792307136. Its totient is φ = 56697085347840.

The previous prime is 125503549101563. The next prime is 125503549101571. The reversal of 125503549101568 is 865101945305521.

It is a happy number.

It is a super-2 number, since 2×125503549101568² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125503549101563) 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, 67437846 + ... + 69273877.

Almost surely, 2^{125503549101568} is an apocalyptic number.

It is an amenable number.

125503549101568 is an abundant number, since it is smaller than the sum of its proper divisors (149733243205568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125503549101568 is a wasteful number, since it uses less digits than its factorization.

125503549101568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136711915 (or 136711899 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 55.

The spelling of 125503549101568 in words is "one hundred twenty-five trillion, five hundred three billion, five hundred forty-nine million, one hundred one thousand, five hundred sixty-eight".