1025217 has 12 divisors (see below), whose sum is σ = 1536080. Its totient is φ = 683316.

The previous prime is 1025209. The next prime is 1025231. The reversal of 1025217 is 7125201.

1025217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1025217 - 2³ = 1025209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1025217.

It is not an unprimeable number, because it can be changed into a prime (1025257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1867 + ... + 2352.

2^1025217 is an apocalyptic number.

It is an amenable number.

1025217 is a deficient number, since it is larger than the sum of its proper divisors (510863).

1025217 is an frugal number, since it uses more digits than its factorization.

1025217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234 (or 4222 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 1025217 is about 1012.5299995556. The cubic root of 1025217 is about 100.8335984936.

The spelling of 1025217 in words is "one million, twenty-five thousand, two hundred seventeen".