20425226 has 4 divisors (see below), whose sum is σ = 30637842. Its totient is φ = 10212612.

The previous prime is 20425217. The next prime is 20425231. The reversal of 20425226 is 62252402.

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

It can be written as a sum of positive squares in only one way, i.e., 13140625 + 7284601 = 3625^2 + 2699^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106305 + ... + 5106308.

Almost surely, 2^20425226 is an apocalyptic number.

20425226 is a deficient number, since it is larger than the sum of its proper divisors (10212616).

20425226 is a wasteful number, since it uses less digits than its factorization.

20425226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212615.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20425226 is about 4519.4276186261. The cubic root of 20425226 is about 273.3520216583.

Adding to 20425226 its reverse (62252402), we get a palindrome (82677628).

The spelling of 20425226 in words is "twenty million, four hundred twenty-five thousand, two hundred twenty-six".