25965990195 has 8 divisors (see below), whose sum is σ = 41545584336. Its totient is φ = 13848528096.

The previous prime is 25965990187. The next prime is 25965990257. The reversal of 25965990195 is 59109956952.

It is a happy number.

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

It is not a de Polignac number, because 25965990195 - 2³ = 25965990187 is a prime.

It is a super-2 number, since 2×25965990195² (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 7 ways as a sum of consecutive naturals, for example, 865532992 + ... + 865533021.

It is an arithmetic number, because the mean of its divisors is an integer number (5193198042).

Almost surely, 2^25965990195 is an apocalyptic number.

25965990195 is a deficient number, since it is larger than the sum of its proper divisors (15579594141).

25965990195 is a wasteful number, since it uses less digits than its factorization.

25965990195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731066021.

The product of its (nonzero) digits is 9841500, while the sum is 60.

The spelling of 25965990195 in words is "twenty-five billion, nine hundred sixty-five million, nine hundred ninety thousand, one hundred ninety-five".