10115404225 has 6 divisors (see below), whose sum is σ = 12543101270. Its totient is φ = 8092323360.

The previous prime is 10115404207. The next prime is 10115404241. The reversal of 10115404225 is 52240451101.

10115404225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 200024449 + 9915379776 = 14143^2 + 99576^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10115404225 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: 404616169 = 10115404225 / (1 + 0 + 1 + 1 + 5 + 4 + 0 + 4 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 10115404225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202308060 + ... + 202308109.

Almost surely, 2^10115404225 is an apocalyptic number.

It is an amenable number.

10115404225 is a deficient number, since it is larger than the sum of its proper divisors (2427697045).

10115404225 is an equidigital number, since it uses as much as digits as its factorization.

10115404225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404616179 (or 404616174 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 10115404225 its reverse (52240451101), we get a palindrome (62355855326).

The spelling of 10115404225 in words is "ten billion, one hundred fifteen million, four hundred four thousand, two hundred twenty-five".