20257492222 has 16 divisors (see below), whose sum is σ = 33490365552. Its totient is φ = 9113022720.

The previous prime is 20257492217. The next prime is 20257492223. The reversal of 20257492222 is 22229475202.

It is a super-2 number, since 2×20257492222² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20257492223) 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, 4744233 + ... + 4748500.

It is an arithmetic number, because the mean of its divisors is an integer number (2093147847).

Almost surely, 2^20257492222 is an apocalyptic number.

20257492222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20257492222 is a deficient number, since it is larger than the sum of its proper divisors (13232873330).

20257492222 is a wasteful number, since it uses less digits than its factorization.

20257492222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9492843.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 20257492222 in words is "twenty billion, two hundred fifty-seven million, four hundred ninety-two thousand, two hundred twenty-two".