125531328417 has 16 divisors (see below), whose sum is σ = 186837328128. Its totient is φ = 74310299280.

The previous prime is 125531328401. The next prime is 125531328467. The reversal of 125531328417 is 714823135521.

It is a happy number.

It is not a de Polignac number, because 125531328417 - 2⁴ = 125531328401 is a prime.

It is a super-2 number, since 2×125531328417² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125531328467) 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, 44230903 + ... + 44233740.

It is an arithmetic number, because the mean of its divisors is an integer number (11677333008).

Almost surely, 2^125531328417 is an apocalyptic number.

It is an amenable number.

125531328417 is a deficient number, since it is larger than the sum of its proper divisors (61305999711).

125531328417 is a wasteful number, since it uses less digits than its factorization.

125531328417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88464700.

The product of its digits is 201600, while the sum is 42.

The spelling of 125531328417 in words is "one hundred twenty-five billion, five hundred thirty-one million, three hundred twenty-eight thousand, four hundred seventeen".