25822138461 has 64 divisors (see below), whose sum is σ = 42439864320. Its totient is φ = 13638481920.

The previous prime is 25822138453. The next prime is 25822138481. The reversal of 25822138461 is 16483122852.

It is not a de Polignac number, because 25822138461 - 2³ = 25822138453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25822138451) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2743215 + ... + 2752611.

It is an arithmetic number, because the mean of its divisors is an integer number (663122880).

Almost surely, 2^25822138461 is an apocalyptic number.

25822138461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25822138461 is a deficient number, since it is larger than the sum of its proper divisors (16617725859).

25822138461 is a wasteful number, since it uses less digits than its factorization.

25822138461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9594.

The product of its digits is 184320, while the sum is 42.

The spelling of 25822138461 in words is "twenty-five billion, eight hundred twenty-two million, one hundred thirty-eight thousand, four hundred sixty-one".