1022625 has 40 divisors (see below), whose sum is σ = 1925352. Its totient is φ = 540000.

The previous prime is 1022611. The next prime is 1022629. The reversal of 1022625 is 5262201.

It can be written as a sum of positive squares in 4 ways, for example, as 6561 + 1016064 = 81^2 + 1008^2 .

It is not a de Polignac number, because 1022625 - 2⁹ = 1022113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022598 and 1022607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10075 + ... + 10175.

2^1022625 is an apocalyptic number.

1022625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1022625 is a deficient number, since it is larger than the sum of its proper divisors (902727).

1022625 is an equidigital number, since it uses as much as digits as its factorization.

1022625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1022625 is about 1011.2492274410. The cubic root of 1022625 is about 100.7485494232.

Adding to 1022625 its reverse (5262201), we get a palindrome (6284826).

The spelling of 1022625 in words is "one million, twenty-two thousand, six hundred twenty-five".