25223000402 has 24 divisors (see below), whose sum is σ = 40294652580. Its totient is φ = 11839028480.

The previous prime is 25223000359. The next prime is 25223000447. The reversal of 25223000402 is 20400032252.

It can be written as a sum of positive squares in 6 ways, for example, as 22861137601 + 2361862801 = 151199^2 + 48599^2 .

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 168752 + ... + 280932.

Almost surely, 2^25223000402 is an apocalyptic number.

25223000402 is a deficient number, since it is larger than the sum of its proper divisors (15071652178).

25223000402 is a wasteful number, since it uses less digits than its factorization.

25223000402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112606 (or 112589 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

Adding to 25223000402 its reverse (20400032252), we get a palindrome (45623032654).

The spelling of 25223000402 in words is "twenty-five billion, two hundred twenty-three million, four hundred two", and thus it is an aban number.