15506061125 has 8 divisors (see below), whose sum is σ = 19351564440. Its totient is φ = 12404848800.

The previous prime is 15506061083. The next prime is 15506061169. The reversal of 15506061125 is 52116060551.

It can be written as a sum of positive squares in 4 ways, for example, as 351712516 + 15154348609 = 18754^2 + 123103^2 .

It is not a de Polignac number, because 15506061125 - 2⁶ = 15506061061 is a prime.

It is a super-2 number, since 2×15506061125² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15506061091 and 15506061100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62024120 + ... + 62024369.

It is an arithmetic number, because the mean of its divisors is an integer number (2418945555).

Almost surely, 2^15506061125 is an apocalyptic number.

It is an amenable number.

15506061125 is a deficient number, since it is larger than the sum of its proper divisors (3845503315).

15506061125 is an equidigital number, since it uses as much as digits as its factorization.

15506061125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124048504 (or 124048494 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 15506061125 in words is "fifteen billion, five hundred six million, sixty-one thousand, one hundred twenty-five".