12251660 has 12 divisors (see below), whose sum is σ = 25728528. Its totient is φ = 4900656.

The previous prime is 12251653. The next prime is 12251671. The reversal of 12251660 is 6615221.

12251660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306272 + ... + 306311.

It is an arithmetic number, because the mean of its divisors is an integer number (2144044).

Almost surely, 2^12251660 is an apocalyptic number.

12251660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12251660 is an abundant number, since it is smaller than the sum of its proper divisors (13476868).

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

12251660 is a wasteful number, since it uses less digits than its factorization.

12251660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612592 (or 612590 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 12251660 is about 3500.2371348239. The cubic root of 12251660 is about 230.5322268187.

Adding to 12251660 its reverse (6615221), we get a palindrome (18866881).

The spelling of 12251660 in words is "twelve million, two hundred fifty-one thousand, six hundred sixty".