1266025 has 12 divisors (see below), whose sum is σ = 1590300. Its totient is φ = 999680.

The previous prime is 1266019. The next prime is 1266043. The reversal of 1266025 is 5206621.

It can be written as a sum of positive squares in 6 ways, for example, as 281961 + 984064 = 531^2 + 992^2 .

It is not a de Polignac number, because 1266025 - 2⁵ = 1265993 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1265987 and 1266005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1941 + ... + 2509.

It is an arithmetic number, because the mean of its divisors is an integer number (132525).

2^1266025 is an apocalyptic number.

It is an amenable number.

1266025 is a deficient number, since it is larger than the sum of its proper divisors (324275).

1266025 is an equidigital number, since it uses as much as digits as its factorization.

1266025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 663 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1266025 is about 1125.1777637334. The cubic root of 1266025 is about 108.1801121249.

The spelling of 1266025 in words is "one million, two hundred sixty-six thousand, twenty-five".