20251022 has 16 divisors (see below), whose sum is σ = 33910272. Its totient is φ = 8990520.

The previous prime is 20251013. The next prime is 20251027. The reversal of 20251022 is 22015202.

It is a junction number, because it is equal to n+sod(n) for n = 20250988 and 20251006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20251027) 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, 9758 + ... + 11649.

It is an arithmetic number, because the mean of its divisors is an integer number (2119392).

Almost surely, 2^20251022 is an apocalyptic number.

20251022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20251022 is a deficient number, since it is larger than the sum of its proper divisors (13659250).

20251022 is a wasteful number, since it uses less digits than its factorization.

20251022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21463.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20251022 is about 4500.1135541228. The cubic root of 20251022 is about 272.5726742730.

Adding to 20251022 its reverse (22015202), we get a palindrome (42266224).

The spelling of 20251022 in words is "twenty million, two hundred fifty-one thousand, twenty-two".