25222212005 has 8 divisors (see below), whose sum is σ = 30270458400. Its totient is φ = 20175233616.

The previous prime is 25222211981. The next prime is 25222212089. The reversal of 25222212005 is 50021222252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25222212005 is a prime.

It is a super-2 number, since 2×25222212005² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272675 + ... + 353264.

It is an arithmetic number, because the mean of its divisors is an integer number (3783807300).

Almost surely, 2^25222212005 is an apocalyptic number.

It is an amenable number.

25222212005 is a deficient number, since it is larger than the sum of its proper divisors (5048246395).

25222212005 is an equidigital number, since it uses as much as digits as its factorization.

25222212005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634003.

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 25222212005 its reverse (50021222252), we get a palindrome (75243434257).

The spelling of 25222212005 in words is "twenty-five billion, two hundred twenty-two million, two hundred twelve thousand, five".