12502415455 has 4 divisors (see below), whose sum is σ = 15002898552. Its totient is φ = 10001932360.

The previous prime is 12502415449. The next prime is 12502415479. The reversal of 12502415455 is 55451420521.

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

It is not a de Polignac number, because 12502415455 - 2³ = 12502415447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12502415455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250241541 + ... + 1250241550.

It is an arithmetic number, because the mean of its divisors is an integer number (3750724638).

Almost surely, 2^12502415455 is an apocalyptic number.

12502415455 is a deficient number, since it is larger than the sum of its proper divisors (2500483097).

12502415455 is an equidigital number, since it uses as much as digits as its factorization.

12502415455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500483096.

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 12502415455 its reverse (55451420521), we get a palindrome (67953835976).

The spelling of 12502415455 in words is "twelve billion, five hundred two million, four hundred fifteen thousand, four hundred fifty-five".