11420440225 has 6 divisors (see below), whose sum is σ = 14161345910. Its totient is φ = 9136352160.

The previous prime is 11420440151. The next prime is 11420440231. The reversal of 11420440225 is 52204402411.

It can be written as a sum of positive squares in 3 ways, for example, as 3991206976 + 7429233249 = 63176^2 + 86193^2 .

It is not a de Polignac number, because 11420440225 - 2²³ = 11412051617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 456817609 = 11420440225 / (1 + 1 + 4 + 2 + 0 + 4 + 4 + 0 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 11420440225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 228408780 + ... + 228408829.

Almost surely, 2^11420440225 is an apocalyptic number.

It is an amenable number.

11420440225 is a deficient number, since it is larger than the sum of its proper divisors (2740905685).

11420440225 is an equidigital number, since it uses as much as digits as its factorization.

11420440225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456817619 (or 456817614 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 11420440225 its reverse (52204402411), we get a palindrome (63624842636).

The spelling of 11420440225 in words is "eleven billion, four hundred twenty million, four hundred forty thousand, two hundred twenty-five".