25849477291 has 8 divisors (see below), whose sum is σ = 29425492224. Its totient is φ = 22477806120.

The previous prime is 25849477271. The next prime is 25849477309. The reversal of 25849477291 is 19277494852.

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

It is not a de Polignac number, because 25849477291 - 2²⁵ = 25815922859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25849477201) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 51085671 + ... + 51086176.

It is an arithmetic number, because the mean of its divisors is an integer number (3678186528).

Almost surely, 2^25849477291 is an apocalyptic number.

25849477291 is a deficient number, since it is larger than the sum of its proper divisors (3576014933).

25849477291 is a wasteful number, since it uses less digits than its factorization.

25849477291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102171881.

The product of its digits is 10160640, while the sum is 58.

The spelling of 25849477291 in words is "twenty-five billion, eight hundred forty-nine million, four hundred seventy-seven thousand, two hundred ninety-one".