1255802 has 4 divisors (see below), whose sum is σ = 1883706. Its totient is φ = 627900.

The previous prime is 1255801. The next prime is 1255811. The reversal of 1255802 is 2085521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2085521 = 79 ⋅26399.

It can be written as a sum of positive squares in only one way, i.e., 1229881 + 25921 = 1109^2 + 161^2 .

It is not an unprimeable number, because it can be changed into a prime (1255801) 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 as a sum of consecutive naturals, namely, 313949 + ... + 313952.

2^1255802 is an apocalyptic number.

1255802 is a deficient number, since it is larger than the sum of its proper divisors (627904).

1255802 is an equidigital number, since it uses as much as digits as its factorization.

1255802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627903.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1255802 is about 1120.6257180700. The cubic root of 1255802 is about 107.8881443648. Note that the first 3 decimals are identical.

The spelling of 1255802 in words is "one million, two hundred fifty-five thousand, eight hundred two".