20125822 has 4 divisors (see below), whose sum is σ = 30188736. Its totient is φ = 10062910.

The previous prime is 20125799. The next prime is 20125829. The reversal of 20125822 is 22852102.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×20125822² = 810097422351368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 20125793 and 20125802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5031454 + ... + 5031457.

It is an arithmetic number, because the mean of its divisors is an integer number (7547184).

Almost surely, 2^20125822 is an apocalyptic number.

20125822 is a deficient number, since it is larger than the sum of its proper divisors (10062914).

20125822 is a wasteful number, since it uses less digits than its factorization.

20125822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10062913.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 20125822 is about 4486.1812268342. The cubic root of 20125822 is about 272.0097945579.

Adding to 20125822 its reverse (22852102), we get a palindrome (42977924).

The spelling of 20125822 in words is "twenty million, one hundred twenty-five thousand, eight hundred twenty-two".