12505315100 has 36 divisors (see below), whose sum is σ = 27169526664. Its totient is φ = 4996044480.

The previous prime is 12505315099. The next prime is 12505315111. The reversal of 12505315100 is 151350521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7094 + ... + 158306.

It is an arithmetic number, because the mean of its divisors is an integer number (754709074).

Almost surely, 2^12505315100 is an apocalyptic number.

12505315100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12505315100 is an abundant number, since it is smaller than the sum of its proper divisors (14664211564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12505315100 is a wasteful number, since it uses less digits than its factorization.

12505315100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152054 (or 152047 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 12505315100 its reverse (151350521), we get a palindrome (12656665621).

The spelling of 12505315100 in words is "twelve billion, five hundred five million, three hundred fifteen thousand, one hundred".