125345044521 has 24 divisors (see below), whose sum is σ = 191915758944. Its totient is φ = 78561072000.

The previous prime is 125345044511. The next prime is 125345044529. The reversal of 125345044521 is 125440543521.

125345044521 is a `hidden beast` number, since 1 + 2 + 53 + 45 + 0 + 44 + 521 = 666.

It is not a de Polignac number, because 125345044521 - 2¹³ = 125345036329 is a prime.

It is a super-2 number, since 2×125345044521² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125345044529) 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, 312855 + ... + 590396.

It is an arithmetic number, because the mean of its divisors is an integer number (7996489956).

Almost surely, 2^125345044521 is an apocalyptic number.

It is an amenable number.

125345044521 is a deficient number, since it is larger than the sum of its proper divisors (66570714423).

125345044521 is a wasteful number, since it uses less digits than its factorization.

125345044521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904181 (or 904178 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 125345044521 in words is "one hundred twenty-five billion, three hundred forty-five million, forty-four thousand, five hundred twenty-one".