22271025 has 48 divisors (see below), whose sum is σ = 42854400. Its totient is φ = 9994560.

The previous prime is 22270999. The next prime is 22271027. The reversal of 22271025 is 52017222.

It is a happy number.

It is not a de Polignac number, because 22271025 - 2⁵ = 22270993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 22270992 and 22271010.

It is not an unprimeable number, because it can be changed into a prime (22271027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30616 + ... + 31334.

It is an arithmetic number, because the mean of its divisors is an integer number (892800).

Almost surely, 2^22271025 is an apocalyptic number.

22271025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22271025 is a deficient number, since it is larger than the sum of its proper divisors (20583375).

22271025 is a wasteful number, since it uses less digits than its factorization.

22271025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 22271025 is about 4719.2186853334. The cubic root of 22271025 is about 281.3498805745.

Adding to 22271025 its reverse (52017222), we get a palindrome (74288247).

The spelling of 22271025 in words is "twenty-two million, two hundred seventy-one thousand, twenty-five".