12255890 has 8 divisors (see below), whose sum is σ = 22060620. Its totient is φ = 4902352.

The previous prime is 12255889. The next prime is 12255899. The reversal of 12255890 is 9855221.

It can be written as a sum of positive squares in 2 ways, for example, as 12159169 + 96721 = 3487^2 + 311^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12255899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612785 + ... + 612804.

Almost surely, 2^12255890 is an apocalyptic number.

12255890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12255890 is a deficient number, since it is larger than the sum of its proper divisors (9804730).

12255890 is a wasteful number, since it uses less digits than its factorization.

12255890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225596.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 12255890 is about 3500.8413274526. The cubic root of 12255890 is about 230.5587549004.

The spelling of 12255890 in words is "twelve million, two hundred fifty-five thousand, eight hundred ninety".