15252454561 has 16 divisors (see below), whose sum is σ = 16063387200. Its totient is φ = 14461070400.

The previous prime is 15252454559. The next prime is 15252454597. The reversal of 15252454561 is 16545425251.

It is not a de Polignac number, because 15252454561 - 2¹ = 15252454559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15252452561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1742566 + ... + 1751296.

It is an arithmetic number, because the mean of its divisors is an integer number (1003961700).

Almost surely, 2^15252454561 is an apocalyptic number.

It is an amenable number.

15252454561 is a deficient number, since it is larger than the sum of its proper divisors (810932639).

15252454561 is a wasteful number, since it uses less digits than its factorization.

15252454561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9840.

The product of its digits is 240000, while the sum is 40.

The spelling of 15252454561 in words is "fifteen billion, two hundred fifty-two million, four hundred fifty-four thousand, five hundred sixty-one".