25823722261 has 4 divisors (see below), whose sum is σ = 25832937952. Its totient is φ = 25814506572.

The previous prime is 25823722231. The next prime is 25823722321. The reversal of 25823722261 is 16222732852.

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 25823722261 - 2⁵ = 25823722229 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 (25823722201) 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, 4603641 + ... + 4609246.

It is an arithmetic number, because the mean of its divisors is an integer number (6458234488).

Almost surely, 2^25823722261 is an apocalyptic number.

It is an amenable number.

25823722261 is a deficient number, since it is larger than the sum of its proper divisors (9215691).

25823722261 is an equidigital number, since it uses as much as digits as its factorization.

25823722261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9215690.

The product of its digits is 161280, while the sum is 40.

The spelling of 25823722261 in words is "twenty-five billion, eight hundred twenty-three million, seven hundred twenty-two thousand, two hundred sixty-one".