12545990 has 16 divisors (see below), whose sum is σ = 22870080. Its totient is φ = 4954560.

The previous prime is 12545989. The next prime is 12545993. The reversal of 12545990 is 9954521.

It is a self number, because there is not a number n which added to its sum of digits gives 12545990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7151 + ... + 8730.

It is an arithmetic number, because the mean of its divisors is an integer number (1429380).

Almost surely, 2^12545990 is an apocalyptic number.

12545990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12545990 is a deficient number, since it is larger than the sum of its proper divisors (10324090).

12545990 is a wasteful number, since it uses less digits than its factorization.

12545990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15967.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 12545990 is about 3542.0319027361. The cubic root of 12545990 is about 232.3637155590.

The spelling of 12545990 in words is "twelve million, five hundred forty-five thousand, nine hundred ninety".