125453214231521 has 24 divisors (see below), whose sum is σ = 138242990723040. Its totient is φ = 113760752156480.

The previous prime is 125453214231511. The next prime is 125453214231539. The reversal of 125453214231521 is 125132412354521.

It is not a de Polignac number, because 125453214231521 - 2¹⁴ = 125453214215137 is a prime.

It is a super-3 number, since 3×125453214231521³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125453214231511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89288570 + ... + 90682716.

It is an arithmetic number, because the mean of its divisors is an integer number (5760124613460).

Almost surely, 2^{125453214231521} is an apocalyptic number.

125453214231521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125453214231521 is a deficient number, since it is larger than the sum of its proper divisors (12789776491519).

125453214231521 is a wasteful number, since it uses less digits than its factorization.

125453214231521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396045 (or 1396034 counting only the distinct ones).

The product of its digits is 288000, while the sum is 41.

The spelling of 125453214231521 in words is "one hundred twenty-five trillion, four hundred fifty-three billion, two hundred fourteen million, two hundred thirty-one thousand, five hundred twenty-one".