1023118225 has 12 divisors (see below), whose sum is σ = 1343294604. Its totient is φ = 770347520.

The previous prime is 1023118219. The next prime is 1023118249. The reversal of 1023118225 is 5228113201.

It can be written as a sum of positive squares in 6 ways, for example, as 50239744 + 972878481 = 7088^2 + 31191^2 .

It is not a de Polignac number, because 1023118225 - 2²⁵ = 989563793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023118225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1203244 + ... + 1204093.

It is an arithmetic number, because the mean of its divisors is an integer number (111941217).

Almost surely, 2^1023118225 is an apocalyptic number.

It is an amenable number.

1023118225 is a deficient number, since it is larger than the sum of its proper divisors (320176379).

1023118225 is a wasteful number, since it uses less digits than its factorization.

1023118225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407364 (or 2407359 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1023118225 is about 31986.2192983166. The cubic root of 1023118225 is about 1007.6474425398.

The spelling of 1023118225 in words is "one billion, twenty-three million, one hundred eighteen thousand, two hundred twenty-five".