1265261 has 4 divisors (see below), whose sum is σ = 1276572. Its totient is φ = 1253952.

The previous prime is 1265249. The next prime is 1265273. The reversal of 1265261 is 1625621.

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

It is an interprime number because it is at equal distance from previous prime (1265249) and next prime (1265273).

It can be written as a sum of positive squares in 2 ways, for example, as 122500 + 1142761 = 350^2 + 1069^2 .

It is a cyclic number.

It is not a de Polignac number, because 1265261 - 2⁶ = 1265197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5486 + ... + 5711.

It is an arithmetic number, because the mean of its divisors is an integer number (319143).

2^1265261 is an apocalyptic number.

It is an amenable number.

1265261 is a deficient number, since it is larger than the sum of its proper divisors (11311).

1265261 is a wasteful number, since it uses less digits than its factorization.

1265261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11310.

The product of its digits is 720, while the sum is 23.

The square root of 1265261 is about 1124.8382105885. The cubic root of 1265261 is about 108.1583468263.

The spelling of 1265261 in words is "one million, two hundred sixty-five thousand, two hundred sixty-one".