25898191199 has 4 divisors (see below), whose sum is σ = 27024199536. Its totient is φ = 24772182864.

The previous prime is 25898191141. The next prime is 25898191211. The reversal of 25898191199 is 99119189852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25898191199 - 2²⁸ = 25629755743 is a prime.

It is a super-2 number, since 2×25898191199² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25898191499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563004134 + ... + 563004179.

It is an arithmetic number, because the mean of its divisors is an integer number (6756049884).

Almost surely, 2^25898191199 is an apocalyptic number.

25898191199 is a deficient number, since it is larger than the sum of its proper divisors (1126008337).

25898191199 is a wasteful number, since it uses less digits than its factorization.

25898191199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126008336.

The product of its digits is 4199040, while the sum is 62.

The spelling of 25898191199 in words is "twenty-five billion, eight hundred ninety-eight million, one hundred ninety-one thousand, one hundred ninety-nine".