12250404 has 72 divisors (see below), whose sum is σ = 33736248. Its totient is φ = 3732480.

The previous prime is 12250397. The next prime is 12250463. The reversal of 12250404 is 40405221.

12250404 = T₁₁₉₂ + T₁₁₉₃ + ... + T₁₂₀₈.

12250404 is a `hidden beast` number, since 12 + 250 + 404 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5280804 + 6969600 = 2298^2 + 2640^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22374 + ... + 22914.

It is an arithmetic number, because the mean of its divisors is an integer number (468559).

Almost surely, 2^12250404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12250404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16868124).

12250404 is an abundant number, since it is smaller than the sum of its proper divisors (21485844).

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

12250404 is a wasteful number, since it uses less digits than its factorization.

12250404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 12250404 is about 3500.0577138099. The cubic root of 12250404 is about 230.5243487468.

Adding to 12250404 its reverse (40405221), we get a palindrome (52655625).

The spelling of 12250404 in words is "twelve million, two hundred fifty thousand, four hundred four".