25222010020 has 24 divisors (see below), whose sum is σ = 52972126200. Its totient is φ = 10087679232.

The previous prime is 25222009997. The next prime is 25222010053. The reversal of 25222010020 is 2001022252.

It can be written as a sum of positive squares in 4 ways, for example, as 16777502784 + 8444507236 = 129528^2 + 91894^2 .

It is a super-2 number, since 2×25222010020² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25222009976 and 25222010003.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 127096 + ... + 258064.

It is an arithmetic number, because the mean of its divisors is an integer number (2207171925).

Almost surely, 2^25222010020 is an apocalyptic number.

25222010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25222010020 is an abundant number, since it is smaller than the sum of its proper divisors (27750116180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25222010020 is a wasteful number, since it uses less digits than its factorization.

25222010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140607 (or 140605 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

Adding to 25222010020 its reverse (2001022252), we get a palindrome (27223032272).

The spelling of 25222010020 in words is "twenty-five billion, two hundred twenty-two million, ten thousand, twenty".