125144421020004 has 24 divisors (see below), whose sum is σ = 292006571795680. Its totient is φ = 41714389471104.

The previous prime is 125144421019997. The next prime is 125144421020009. The reversal of 125144421020004 is 400020124441521.

It is a super-2 number, since 2×125144421020004² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125144421020009) 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, 50941909 + ... + 53341980.

Almost surely, 2^{125144421020004} is an apocalyptic number.

It is an amenable number.

125144421020004 is an abundant number, since it is smaller than the sum of its proper divisors (166862150775676).

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

125144421020004 is a wasteful number, since it uses less digits than its factorization.

125144421020004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104383899 (or 104383897 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 125144421020004 its reverse (400020124441521), we get a palindrome (525164545461525).

The spelling of 125144421020004 in words is "one hundred twenty-five trillion, one hundred forty-four billion, four hundred twenty-one million, twenty thousand, four".