25862198842 has 8 divisors (see below), whose sum is σ = 38834702676. Its totient is φ = 12917297952.

The previous prime is 25862198801. The next prime is 25862198863. The reversal of 25862198842 is 24889126852.

It can be written as a sum of positive squares in 2 ways, for example, as 18610143561 + 7252055281 = 136419^2 + 85159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25862198842² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6898393 + ... + 6902140.

Almost surely, 2^25862198842 is an apocalyptic number.

25862198842 is a deficient number, since it is larger than the sum of its proper divisors (12972503834).

25862198842 is a wasteful number, since it uses less digits than its factorization.

25862198842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13801472.

The product of its digits is 4423680, while the sum is 55.

The spelling of 25862198842 in words is "twenty-five billion, eight hundred sixty-two million, one hundred ninety-eight thousand, eight hundred forty-two".