1265251 has 4 divisors (see below), whose sum is σ = 1362592. Its totient is φ = 1167912.

The previous prime is 1265249. The next prime is 1265273. The reversal of 1265251 is 1525621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1525621 = 37 ⋅41233.

It is a cyclic number.

It is not a de Polignac number, because 1265251 - 2¹ = 1265249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1265281) 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 3 ways as a sum of consecutive naturals, for example, 48651 + ... + 48676.

It is an arithmetic number, because the mean of its divisors is an integer number (340648).

2^1265251 is an apocalyptic number.

1265251 is a deficient number, since it is larger than the sum of its proper divisors (97341).

1265251 is an equidigital number, since it uses as much as digits as its factorization.

1265251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97340.

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

The square root of 1265251 is about 1124.8337654960. The cubic root of 1265251 is about 108.1580618821.

The spelling of 1265251 in words is "one million, two hundred sixty-five thousand, two hundred fifty-one".