15534543325 has 24 divisors (see below), whose sum is σ = 22022572608. Its totient is φ = 10648433280.

The previous prime is 15534543319. The next prime is 15534543329. The reversal of 15534543325 is 52334543551.

It is not a de Polignac number, because 15534543325 - 2¹⁷ = 15534412253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15534543329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 525129 + ... + 553921.

It is an arithmetic number, because the mean of its divisors is an integer number (917607192).

Almost surely, 2^15534543325 is an apocalyptic number.

It is an amenable number.

15534543325 is a deficient number, since it is larger than the sum of its proper divisors (6488029283).

15534543325 is a wasteful number, since it uses less digits than its factorization.

15534543325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31893 (or 31888 counting only the distinct ones).

The product of its digits is 540000, while the sum is 40.

The spelling of 15534543325 in words is "fifteen billion, five hundred thirty-four million, five hundred forty-three thousand, three hundred twenty-five".