1622425 has 24 divisors (see below), whose sum is σ = 2349056. Its totient is φ = 1088640.

The previous prime is 1622419. The next prime is 1622431. The reversal of 1622425 is 5242261.

1622425 = T₇₀ + T₇₁ + ... + T₂₁₅.

It is an interprime number because it is at equal distance from previous prime (1622419) and next prime (1622431).

It is not a de Polignac number, because 1622425 - 2⁷ = 1622297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1622396 and 1622405.

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, 12712 + ... + 12838.

2^1622425 is an apocalyptic number.

It is an amenable number.

1622425 is a deficient number, since it is larger than the sum of its proper divisors (726631).

1622425 is a wasteful number, since it uses less digits than its factorization.

1622425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 212 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 1622425 is about 1273.7444798703. The cubic root of 1622425 is about 117.5046022039.

Adding to 1622425 its reverse (5242261), we get a palindrome (6864686).

The spelling of 1622425 in words is "one million, six hundred twenty-two thousand, four hundred twenty-five".