16125115525 has 6 divisors (see below), whose sum is σ = 19995143282. Its totient is φ = 12900092400.

The previous prime is 16125115493. The next prime is 16125115561. The reversal of 16125115525 is 52551152161.

It can be written as a sum of positive squares in 3 ways, for example, as 5614355041 + 10510760484 = 74929^2 + 102522^2 .

It is not a de Polignac number, because 16125115525 - 2⁵ = 16125115493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 322502286 + ... + 322502335.

Almost surely, 2^16125115525 is an apocalyptic number.

It is an amenable number.

16125115525 is a deficient number, since it is larger than the sum of its proper divisors (3870027757).

16125115525 is an equidigital number, since it uses as much as digits as its factorization.

16125115525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645004631 (or 645004626 counting only the distinct ones).

The product of its digits is 15000, while the sum is 34.

Adding to 16125115525 its reverse (52551152161), we get a palindrome (68676267686).

The spelling of 16125115525 in words is "sixteen billion, one hundred twenty-five million, one hundred fifteen thousand, five hundred twenty-five".