1265215 has 16 divisors (see below), whose sum is σ = 1783872. Its totient is φ = 843264.

The previous prime is 1265197. The next prime is 1265233. The reversal of 1265215 is 5125621.

It is an interprime number because it is at equal distance from previous prime (1265197) and next prime (1265233).

It is a cyclic number.

It is not a de Polignac number, because 1265215 - 2⁷ = 1265087 is a prime.

It is a Duffinian number.

1265215 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807 + ... + 1783.

It is an arithmetic number, because the mean of its divisors is an integer number (111492).

2^1265215 is an apocalyptic number.

1265215 is a deficient number, since it is larger than the sum of its proper divisors (518657).

1265215 is an equidigital number, since it uses as much as digits as its factorization.

1265215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its digits is 600, while the sum is 22.

The square root of 1265215 is about 1124.8177630176. The cubic root of 1265215 is about 108.1570360706.

The spelling of 1265215 in words is "one million, two hundred sixty-five thousand, two hundred fifteen".