1265457 has 12 divisors (see below), whose sum is σ = 1788080. Its totient is φ = 793872.

The previous prime is 1265449. The next prime is 1265461. The reversal of 1265457 is 7545621.

It is not a de Polignac number, because 1265457 - 2³ = 1265449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1265477) 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 11 ways as a sum of consecutive naturals, for example, 8419 + ... + 8567.

2^1265457 is an apocalyptic number.

It is an amenable number.

1265457 is a deficient number, since it is larger than the sum of its proper divisors (522623).

1265457 is an equidigital number, since it uses as much as digits as its factorization.

1265457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 171 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 1265457 is about 1124.9253308553. The cubic root of 1265457 is about 108.1639314294.

The spelling of 1265457 in words is "one million, two hundred sixty-five thousand, four hundred fifty-seven".