25222101131 has 4 divisors (see below), whose sum is σ = 25577342064. Its totient is φ = 24866860200.

The previous prime is 25222101083. The next prime is 25222101181. The reversal of 25222101131 is 13110122252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25222101131 - 2²² = 25217906827 is a prime.

It is a super-2 number, since 2×25222101131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25222101181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177620360 + ... + 177620501.

It is an arithmetic number, because the mean of its divisors is an integer number (6394335516).

Almost surely, 2^25222101131 is an apocalyptic number.

25222101131 is a deficient number, since it is larger than the sum of its proper divisors (355240933).

25222101131 is an equidigital number, since it uses as much as digits as its factorization.

25222101131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355240932.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 25222101131 its reverse (13110122252), we get a palindrome (38332223383).

The spelling of 25222101131 in words is "twenty-five billion, two hundred twenty-two million, one hundred one thousand, one hundred thirty-one".