25262893261 has 4 divisors (see below), whose sum is σ = 25582676800. Its totient is φ = 24943109724.

The previous prime is 25262893223. The next prime is 25262893273. The reversal of 25262893261 is 16239826252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25262893261 - 2¹³ = 25262885069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25262893961) 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, 159891651 + ... + 159891808.

It is an arithmetic number, because the mean of its divisors is an integer number (6395669200).

Almost surely, 2^25262893261 is an apocalyptic number.

It is an amenable number.

25262893261 is a deficient number, since it is larger than the sum of its proper divisors (319783539).

25262893261 is an equidigital number, since it uses as much as digits as its factorization.

25262893261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319783538.

The product of its digits is 622080, while the sum is 46.

The spelling of 25262893261 in words is "twenty-five billion, two hundred sixty-two million, eight hundred ninety-three thousand, two hundred sixty-one".