12515100 has 72 divisors (see below), whose sum is σ = 39007920. Its totient is φ = 3079680.

The previous prime is 12515093. The next prime is 12515117. The reversal of 12515100 is 151521.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12515100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2296 + ... + 5504.

Almost surely, 2^12515100 is an apocalyptic number.

12515100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12515100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19503960).

12515100 is an abundant number, since it is smaller than the sum of its proper divisors (26492820).

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

12515100 is a wasteful number, since it uses less digits than its factorization.

12515100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239 (or 3232 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 12515100 is about 3537.6687238915. The cubic root of 12515100 is about 232.1728547316.

Adding to 12515100 its reverse (151521), we get a palindrome (12666621).

It can be divided in two parts, 125 and 15100, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 12515100 in words is "twelve million, five hundred fifteen thousand, one hundred".