12505290 has 96 divisors (see below), whose sum is σ = 35852544. Its totient is φ = 2782080.

The previous prime is 12505271. The next prime is 12505291. The reversal of 12505290 is 9250521.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12505290.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69000 + ... + 69180.

It is an arithmetic number, because the mean of its divisors is an integer number (373464).

Almost surely, 2^12505290 is an apocalyptic number.

12505290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12505290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17926272).

12505290 is an abundant number, since it is smaller than the sum of its proper divisors (23347254).

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

12505290 is a wasteful number, since it uses less digits than its factorization.

12505290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 12505290 is about 3536.2819457730. The cubic root of 12505290 is about 232.1121757366.

The spelling of 12505290 in words is "twelve million, five hundred five thousand, two hundred ninety".