1420825 has 24 divisors (see below), whose sum is σ = 2107008. Its totient is φ = 929280.

The previous prime is 1420819. The next prime is 1420831. The reversal of 1420825 is 5280241.

It is an interprime number because it is at equal distance from previous prime (1420819) and next prime (1420831).

It is not a de Polignac number, because 1420825 - 2³ = 1420817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1420796 and 1420805.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3849 + ... + 4201.

It is an arithmetic number, because the mean of its divisors is an integer number (87792).

2^1420825 is an apocalyptic number.

It is an amenable number.

1420825 is a deficient number, since it is larger than the sum of its proper divisors (686183).

1420825 is a wasteful number, since it uses less digits than its factorization.

1420825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1420825 is about 1191.9836408273. The cubic root of 1420825 is about 112.4208496760.

The spelling of 1420825 in words is "one million, four hundred twenty thousand, eight hundred twenty-five".