25422105261 has 16 divisors (see below), whose sum is σ = 38740717184. Its totient is φ = 14526065664.

The previous prime is 25422105217. The next prime is 25422105271. The reversal of 25422105261 is 16250122452.

It is not a de Polignac number, because 25422105261 - 2¹³ = 25422097069 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 (25422105271) 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 15 ways as a sum of consecutive naturals, for example, 577545 + ... + 620001.

It is an arithmetic number, because the mean of its divisors is an integer number (2421294824).

Almost surely, 2^25422105261 is an apocalyptic number.

25422105261 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25422105261 is a deficient number, since it is larger than the sum of its proper divisors (13318611923).

25422105261 is a wasteful number, since it uses less digits than its factorization.

25422105261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70980.

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 25422105261 in words is "twenty-five billion, four hundred twenty-two million, one hundred five thousand, two hundred sixty-one".