11252547409 has 2 divisors, whose sum is σ = 11252547410. Its totient is φ = 11252547408.

The previous prime is 11252547343. The next prime is 11252547421. The reversal of 11252547409 is 90474525211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5708255809 + 5544291600 = 75553^2 + 74460^2 .

It is a cyclic number.

It is not a de Polignac number, because 11252547409 - 2⁷ = 11252547281 is a prime.

It is a super-2 number, since 2×11252547409² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11252647409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5626273704 + 5626273705.

It is an arithmetic number, because the mean of its divisors is an integer number (5626273705).

Almost surely, 2^11252547409 is an apocalyptic number.

It is an amenable number.

11252547409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11252547409 is an equidigital number, since it uses as much as digits as its factorization.

11252547409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 11252547409 in words is "eleven billion, two hundred fifty-two million, five hundred forty-seven thousand, four hundred nine".