12515552 has 48 divisors (see below), whose sum is σ = 28667520. Its totient is φ = 5267328.

The previous prime is 12515551. The next prime is 12515563. The reversal of 12515552 is 25551521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12743 + ... + 13689.

It is an arithmetic number, because the mean of its divisors is an integer number (597240).

Almost surely, 2^12515552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12515552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14333760).

12515552 is an abundant number, since it is smaller than the sum of its proper divisors (16151968).

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

12515552 is an equidigital number, since it uses as much as digits as its factorization.

12515552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023 (or 1015 counting only the distinct ones).

The product of its digits is 2500, while the sum is 26.

The square root of 12515552 is about 3537.7326071935. The cubic root of 12515552 is about 232.1756497783.

The spelling of 12515552 in words is "twelve million, five hundred fifteen thousand, five hundred fifty-two".