1025255 has 16 divisors (see below), whose sum is σ = 1534464. Its totient is φ = 638880.

The previous prime is 1025239. The next prime is 1025257. The reversal of 1025255 is 5525201.

It is not a de Polignac number, because 1025255 - 2⁴ = 1025239 is a prime.

It is a super-2 number, since 2×1025255² = 2102295630050, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 947 + ... + 1716.

It is an arithmetic number, because the mean of its divisors is an integer number (95904).

2^1025255 is an apocalyptic number.

1025255 is a deficient number, since it is larger than the sum of its proper divisors (509209).

1025255 is a wasteful number, since it uses less digits than its factorization.

1025255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 1025255 is about 1012.5487642578. The cubic root of 1025255 is about 100.8348442882.

The spelling of 1025255 in words is "one million, twenty-five thousand, two hundred fifty-five".