1226581253 has 2 divisors, whose sum is σ = 1226581254. Its totient is φ = 1226581252.

The previous prime is 1226581219. The next prime is 1226581277. The reversal of 1226581253 is 3521856221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1115426404 + 111154849 = 33398^2 + 10543^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226581253 - 2⁶ = 1226581189 is a prime.

It is a super-2 number, since 2×1226581253² = 3009003140422100018, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226584253) by changing a digit.

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 as a sum of consecutive naturals, namely, 613290626 + 613290627.

It is an arithmetic number, because the mean of its divisors is an integer number (613290627).

Almost surely, 2^1226581253 is an apocalyptic number.

It is an amenable number.

1226581253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226581253 is an equidigital number, since it uses as much as digits as its factorization.

1226581253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 35.

The square root of 1226581253 is about 35022.5820435901. The cubic root of 1226581253 is about 1070.4476692583.

The spelling of 1226581253 in words is "one billion, two hundred twenty-six million, five hundred eighty-one thousand, two hundred fifty-three".