22222220025 has 24 divisors (see below), whose sum is σ = 36747380160. Its totient is φ = 11849707840.

The previous prime is 22222220011. The next prime is 22222220077. The reversal of 22222220025 is 52002222222.

It is not a de Polignac number, because 22222220025 - 2¹¹ = 22222217977 is a prime.

It is a super-2 number, since 2×22222220025² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22222219983 and 22222220010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 446071 + ... + 493379.

It is an arithmetic number, because the mean of its divisors is an integer number (1531140840).

Almost surely, 2^22222220025 is an apocalyptic number.

22222220025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22222220025 is a deficient number, since it is larger than the sum of its proper divisors (14525160135).

22222220025 is a wasteful number, since it uses less digits than its factorization.

22222220025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53585 (or 53580 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

Adding to 22222220025 its reverse (52002222222), we get a palindrome (74224442247).

The spelling of 22222220025 in words is "twenty-two billion, two hundred twenty-two million, two hundred twenty thousand, twenty-five".