125442012013 has 16 divisors (see below), whose sum is σ = 132738024960. Its totient is φ = 118397534976.

The previous prime is 125442011957. The next prime is 125442012049. The reversal of 125442012013 is 310210244521.

It is a cyclic number.

It is not a de Polignac number, because 125442012013 - 2²¹ = 125439914861 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 (125442012053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122673 + ... + 515686.

It is an arithmetic number, because the mean of its divisors is an integer number (8296126560).

Almost surely, 2^125442012013 is an apocalyptic number.

It is an amenable number.

125442012013 is a deficient number, since it is larger than the sum of its proper divisors (7296012947).

125442012013 is a wasteful number, since it uses less digits than its factorization.

125442012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638556.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 125442012013 its reverse (310210244521), we get a palindrome (435652256534).

The spelling of 125442012013 in words is "one hundred twenty-five billion, four hundred forty-two million, twelve thousand, thirteen".