1622225 has 24 divisors (see below), whose sum is σ = 2330208. Its totient is φ = 1107200.

The previous prime is 1622209. The next prime is 1622233. The reversal of 1622225 is 5222261.

It is not a de Polignac number, because 1622225 - 2⁴ = 1622209 is a prime.

It is a super-2 number, since 2×1622225² = 5263227901250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1622197 and 1622206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4502 + ... + 4848.

It is an arithmetic number, because the mean of its divisors is an integer number (97092).

2^1622225 is an apocalyptic number.

It is an amenable number.

1622225 is a deficient number, since it is larger than the sum of its proper divisors (707983).

1622225 is a wasteful number, since it uses less digits than its factorization.

1622225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 380 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 1622225 is about 1273.6659687689. The cubic root of 1622225 is about 117.4997736528.

Adding to 1622225 its reverse (5222261), we get a palindrome (6844486).

It can be divided in two parts, 1 and 622225, that added together give a palindrome (622226).

The spelling of 1622225 in words is "one million, six hundred twenty-two thousand, two hundred twenty-five".