25196163398 has 16 divisors (see below), whose sum is σ = 43200107520. Its totient is φ = 10796684616.

The previous prime is 25196163367. The next prime is 25196163407. The reversal of 25196163398 is 89336169152.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43286 + ... + 228617.

It is an arithmetic number, because the mean of its divisors is an integer number (2700006720).

Almost surely, 2^25196163398 is an apocalyptic number.

25196163398 is a deficient number, since it is larger than the sum of its proper divisors (18003944122).

25196163398 is a wasteful number, since it uses less digits than its factorization.

25196163398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278531.

The product of its digits is 2099520, while the sum is 53.

The spelling of 25196163398 in words is "twenty-five billion, one hundred ninety-six million, one hundred sixty-three thousand, three hundred ninety-eight".