25222356401 has 32 divisors (see below), whose sum is σ = 28482088320. Its totient is φ = 22140352000.

The previous prime is 25222356389. The next prime is 25222356403. The reversal of 25222356401 is 10465322252.

It is a cyclic number.

It is not a de Polignac number, because 25222356401 - 2²² = 25218162097 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 (25222356403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10538861 + ... + 10541253.

It is an arithmetic number, because the mean of its divisors is an integer number (890065260).

Almost surely, 2^25222356401 is an apocalyptic number.

It is an amenable number.

25222356401 is a deficient number, since it is larger than the sum of its proper divisors (3259731919).

25222356401 is a wasteful number, since it uses less digits than its factorization.

25222356401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 25222356401 its reverse (10465322252), we get a palindrome (35687678653).

The spelling of 25222356401 in words is "twenty-five billion, two hundred twenty-two million, three hundred fifty-six thousand, four hundred one".