12505590 has 40 divisors (see below), whose sum is σ = 33628320. Its totient is φ = 3334608.

The previous prime is 12505579. The next prime is 12505601. The reversal of 12505590 is 9550521.

It is an interprime number because it is at equal distance from previous prime (12505579) and next prime (12505601).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6910 + ... + 8529.

It is an arithmetic number, because the mean of its divisors is an integer number (840708).

Almost surely, 2^12505590 is an apocalyptic number.

12505590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12505590 is an abundant number, since it is smaller than the sum of its proper divisors (21122730).

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

12505590 is a wasteful number, since it uses less digits than its factorization.

12505590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15458 (or 15449 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 12505590 is about 3536.3243629509. The cubic root of 12505590 is about 232.1140318337.

The spelling of 12505590 in words is "twelve million, five hundred five thousand, five hundred ninety".