125443555624021 has 8 divisors (see below), whose sum is σ = 130911226070400. Its totient is φ = 119977018745232.

The previous prime is 125443555624007. The next prime is 125443555624061. The reversal of 125443555624021 is 120426555344521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125443555624021 - 2²⁵ = 125443522069589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125443555624061) 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, 283165746 + ... + 283608403.

It is an arithmetic number, because the mean of its divisors is an integer number (16363903258800).

Almost surely, 2^{125443555624021} is an apocalyptic number.

It is an amenable number.

125443555624021 is a deficient number, since it is larger than the sum of its proper divisors (5467670446379).

125443555624021 is an equidigital number, since it uses as much as digits as its factorization.

125443555624021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566783795.

The product of its (nonzero) digits is 5760000, while the sum is 49.

The spelling of 125443555624021 in words is "one hundred twenty-five trillion, four hundred forty-three billion, five hundred fifty-five million, six hundred twenty-four thousand, twenty-one".