25221303122 has 16 divisors (see below), whose sum is σ = 40237005312. Its totient is φ = 11815621440.

The previous prime is 25221303101. The next prime is 25221303127. The reversal of 25221303122 is 22130312252.

It is a super-2 number, since 2×25221303122² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25221303127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1655654 + ... + 1670817.

It is an arithmetic number, because the mean of its divisors is an integer number (2514812832).

Almost surely, 2^25221303122 is an apocalyptic number.

25221303122 is a deficient number, since it is larger than the sum of its proper divisors (15015702190).

25221303122 is a wasteful number, since it uses less digits than its factorization.

25221303122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326713.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 25221303122 its reverse (22130312252), we get a palindrome (47351615374).

It can be divided in two parts, 2522130 and 3122, that added together give a palindrome (2525252).

The spelling of 25221303122 in words is "twenty-five billion, two hundred twenty-one million, three hundred three thousand, one hundred twenty-two".