12251664 has 30 divisors (see below), whose sum is σ = 34288046. Its totient is φ = 4083840.

The previous prime is 12251653. The next prime is 12251671. The reversal of 12251664 is 46615221.

It can be written as a sum of positive squares in only one way, i.e., 12194064 + 57600 = 3492^2 + 240^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42397 + ... + 42684.

Almost surely, 2^12251664 is an apocalyptic number.

It is an amenable number.

12251664 is an abundant number, since it is smaller than the sum of its proper divisors (22036382).

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

12251664 is a wasteful number, since it uses less digits than its factorization.

12251664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85095 (or 85086 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 12251664 is about 3500.2377062137. The cubic root of 12251664 is about 230.5322519072.

Adding to 12251664 its reverse (46615221), we get a palindrome (58866885).

The spelling of 12251664 in words is "twelve million, two hundred fifty-one thousand, six hundred sixty-four".