15425523121 has 8 divisors (see below), whose sum is σ = 16334439264. Its totient is φ = 14516777280.

The previous prime is 15425523059. The next prime is 15425523161. The reversal of 15425523121 is 12132552451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15425523121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15425523161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176026 + ... + 248668.

It is an arithmetic number, because the mean of its divisors is an integer number (2041804908).

Almost surely, 2^15425523121 is an apocalyptic number.

It is an amenable number.

15425523121 is a deficient number, since it is larger than the sum of its proper divisors (908916143).

15425523121 is a wasteful number, since it uses less digits than its factorization.

15425523121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85151.

The product of its digits is 12000, while the sum is 31.

The spelling of 15425523121 in words is "fifteen billion, four hundred twenty-five million, five hundred twenty-three thousand, one hundred twenty-one".