15825481355 has 4 divisors (see below), whose sum is σ = 18990577632. Its totient is φ = 12660385080.

The previous prime is 15825481351. The next prime is 15825481403. The reversal of 15825481355 is 55318452851.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15825481355 - 2² = 15825481351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15825481351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1582548131 + ... + 1582548140.

It is an arithmetic number, because the mean of its divisors is an integer number (4747644408).

Almost surely, 2^15825481355 is an apocalyptic number.

15825481355 is a deficient number, since it is larger than the sum of its proper divisors (3165096277).

15825481355 is an equidigital number, since it uses as much as digits as its factorization.

15825481355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165096276.

The product of its digits is 960000, while the sum is 47.

The spelling of 15825481355 in words is "fifteen billion, eight hundred twenty-five million, four hundred eighty-one thousand, three hundred fifty-five".