15525115013 has 4 divisors (see below), whose sum is σ = 15526526400. Its totient is φ = 15523703628.

The previous prime is 15525115009. The next prime is 15525115019. The reversal of 15525115013 is 31051152551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15525115013 - 2² = 15525115009 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 (15525115019) 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 3 ways as a sum of consecutive naturals, for example, 689063 + ... + 711236.

It is an arithmetic number, because the mean of its divisors is an integer number (3881631600).

Almost surely, 2^15525115013 is an apocalyptic number.

It is an amenable number.

15525115013 is a deficient number, since it is larger than the sum of its proper divisors (1411387).

15525115013 is a wasteful number, since it uses less digits than its factorization.

15525115013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411386.

The product of its (nonzero) digits is 3750, while the sum is 29.

Adding to 15525115013 its reverse (31051152551), we get a palindrome (46576267564).

The spelling of 15525115013 in words is "fifteen billion, five hundred twenty-five million, one hundred fifteen thousand, thirteen".