125354161453521 has 144 divisors (see below), whose sum is σ = 232426745538624. Its totient is φ = 59514729120000.

The previous prime is 125354161453511. The next prime is 125354161453621.

125354161453521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 125354161453521 - 2⁷ = 125354161453393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125354161453501) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 20670586 + ... + 26038076.

It is an arithmetic number, because the mean of its divisors is an integer number (1614074621796).

Almost surely, 2^{125354161453521} is an apocalyptic number.

125354161453521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125354161453521 is a deficient number, since it is larger than the sum of its proper divisors (107072584085103).

125354161453521 is a wasteful number, since it uses less digits than its factorization.

125354161453521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5367644 (or 5367626 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 48.

The spelling of 125354161453521 in words is "one hundred twenty-five trillion, three hundred fifty-four billion, one hundred sixty-one million, four hundred fifty-three thousand, five hundred twenty-one".