1025215 has 4 divisors (see below), whose sum is σ = 1230264. Its totient is φ = 820168.

The previous prime is 1025209. The next prime is 1025231. The reversal of 1025215 is 5125201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1025215 - 2⁹ = 1024703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102517 + ... + 102526.

It is an arithmetic number, because the mean of its divisors is an integer number (307566).

2^1025215 is an apocalyptic number.

1025215 is a deficient number, since it is larger than the sum of its proper divisors (205049).

1025215 is an equidigital number, since it uses as much as digits as its factorization.

1025215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205048.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1025215 is about 1012.5290119300. The cubic root of 1025215 is about 100.8335329246.

The spelling of 1025215 in words is "one million, twenty-five thousand, two hundred fifteen".