25049293361 has 4 divisors (see below), whose sum is σ = 25052103924. Its totient is φ = 25046482800.

The previous prime is 25049293343. The next prime is 25049293411. The reversal of 25049293361 is 16339294052.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16186200625 + 8863092736 = 127225^2 + 94144^2 .

It is a cyclic number.

It is not a de Polignac number, because 25049293361 - 2²⁶ = 24982184497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25049293861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391870 + ... + 1409751.

It is an arithmetic number, because the mean of its divisors is an integer number (6263025981).

Almost surely, 2^25049293361 is an apocalyptic number.

It is an amenable number.

25049293361 is a deficient number, since it is larger than the sum of its proper divisors (2810563).

25049293361 is an equidigital number, since it uses as much as digits as its factorization.

25049293361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810562.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 25049293361 in words is "twenty-five billion, forty-nine million, two hundred ninety-three thousand, three hundred sixty-one".