15243522425 has 6 divisors (see below), whose sum is σ = 18901967838. Its totient is φ = 12194817920.

The previous prime is 15243522373. The next prime is 15243522439. The reversal of 15243522425 is 52422534251.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 141324544 + 15102197881 = 11888^2 + 122891^2 .

It is not a de Polignac number, because 15243522425 - 2⁸ = 15243522169 is a prime.

It is a Duffinian 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, 304870424 + ... + 304870473.

It is an arithmetic number, because the mean of its divisors is an integer number (3150327973).

Almost surely, 2^15243522425 is an apocalyptic number.

It is an amenable number.

15243522425 is a deficient number, since it is larger than the sum of its proper divisors (3658445413).

15243522425 is an equidigital number, since it uses as much as digits as its factorization.

15243522425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609740907 (or 609740902 counting only the distinct ones).

The product of its digits is 96000, while the sum is 35.

The spelling of 15243522425 in words is "fifteen billion, two hundred forty-three million, five hundred twenty-two thousand, four hundred twenty-five".