15525220732073 has 32 divisors (see below), whose sum is σ = 17655625209600. Its totient is φ = 13551490503936.

The previous prime is 15525220732039. The next prime is 15525220732111. The reversal of 15525220732073 is 37023702252551.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 15525220732073 - 2²⁰ = 15525219683497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15525220132073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2593388 + ... + 6146226.

It is an arithmetic number, because the mean of its divisors is an integer number (551738287800).

Almost surely, 2^{15525220732073} is an apocalyptic number.

15525220732073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15525220732073 is a deficient number, since it is larger than the sum of its proper divisors (2130404477527).

15525220732073 is a wasteful number, since it uses less digits than its factorization.

15525220732073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3553121.

The product of its (nonzero) digits is 882000, while the sum is 44.

The spelling of 15525220732073 in words is "fifteen trillion, five hundred twenty-five billion, two hundred twenty million, seven hundred thirty-two thousand, seventy-three".