15500406125 has 16 divisors (see below), whose sum is σ = 19756099584. Its totient is φ = 12136483600.

The previous prime is 15500406091. The next prime is 15500406139. The reversal of 15500406125 is 52160400551.

It is a happy number.

It is not a de Polignac number, because 15500406125 - 2¹⁴ = 15500389741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1313309 + ... + 1325058.

It is an arithmetic number, because the mean of its divisors is an integer number (1234756224).

Almost surely, 2^15500406125 is an apocalyptic number.

It is an amenable number.

15500406125 is a deficient number, since it is larger than the sum of its proper divisors (4255693459).

15500406125 is an equidigital number, since it uses as much as digits as its factorization.

15500406125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638429 (or 2638419 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 15500406125 its reverse (52160400551), we get a palindrome (67660806676).

The spelling of 15500406125 in words is "fifteen billion, five hundred million, four hundred six thousand, one hundred twenty-five".