15245854251 has 4 divisors (see below), whose sum is σ = 20327805672. Its totient is φ = 10163902832.

The previous prime is 15245854249. The next prime is 15245854271.

15245854251 is nontrivially palindromic in base 10.

15245854251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 15245854251 - 2¹ = 15245854249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15245854271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2540975706 + ... + 2540975711.

It is an arithmetic number, because the mean of its divisors is an integer number (5081951418).

Almost surely, 2^15245854251 is an apocalyptic number.

15245854251 is a deficient number, since it is larger than the sum of its proper divisors (5081951421).

15245854251 is an equidigital number, since it uses as much as digits as its factorization.

15245854251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081951420.

The product of its digits is 320000, while the sum is 42.

The spelling of 15245854251 in words is "fifteen billion, two hundred forty-five million, eight hundred fifty-four thousand, two hundred fifty-one".