1265090 has 16 divisors (see below), whose sum is σ = 2309688. Its totient is φ = 498816.

The previous prime is 1265087. The next prime is 1265093. The reversal of 1265090 is 905621.

It is an interprime number because it is at equal distance from previous prime (1265087) and next prime (1265093).

It can be written as a sum of positive squares in 4 ways, for example, as 1018081 + 247009 = 1009^2 + 497^2 .

It is not an unprimeable number, because it can be changed into a prime (1265093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137 + ... + 1596.

2^1265090 is an apocalyptic number.

1265090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1265090 is a deficient number, since it is larger than the sum of its proper divisors (1044598).

1265090 is a wasteful number, since it uses less digits than its factorization.

1265090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1265090 is about 1124.7621970888. The cubic root of 1265090 is about 108.1534740739.

The spelling of 1265090 in words is "one million, two hundred sixty-five thousand, ninety".