15442252525 has 24 divisors (see below), whose sum is σ = 21899759040. Its totient is φ = 10581288960.

The previous prime is 15442252499. The next prime is 15442252531. The reversal of 15442252525 is 52525224451.

It is not a de Polignac number, because 15442252525 - 2²¹ = 15440155373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215262 + ... + 277888.

It is an arithmetic number, because the mean of its divisors is an integer number (912489960).

Almost surely, 2^15442252525 is an apocalyptic number.

It is an amenable number.

15442252525 is a deficient number, since it is larger than the sum of its proper divisors (6457506515).

15442252525 is a wasteful number, since it uses less digits than its factorization.

15442252525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64053 (or 64048 counting only the distinct ones).

The product of its digits is 160000, while the sum is 37.

Adding to 15442252525 its reverse (52525224451), we get a palindrome (67967476976).

The spelling of 15442252525 in words is "fifteen billion, four hundred forty-two million, two hundred fifty-two thousand, five hundred twenty-five".