25849345274 has 8 divisors (see below), whose sum is σ = 41054842548. Its totient is φ = 12164397760.

The previous prime is 25849345259. The next prime is 25849345279. The reversal of 25849345274 is 47254394852.

It can be written as a sum of positive squares in 2 ways, for example, as 24930831025 + 918514249 = 157895^2 + 30307^2 .

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

It is a super-2 number, since 2×25849345274² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25849345279) 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 3 ways as a sum of consecutive naturals, for example, 380137397 + ... + 380137464.

Almost surely, 2^25849345274 is an apocalyptic number.

25849345274 is a deficient number, since it is larger than the sum of its proper divisors (15205497274).

25849345274 is a wasteful number, since it uses less digits than its factorization.

25849345274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760274880.

The product of its digits is 9676800, while the sum is 53.

The spelling of 25849345274 in words is "twenty-five billion, eight hundred forty-nine million, three hundred forty-five thousand, two hundred seventy-four".