805250025 has 48 divisors (see below), whose sum is σ = 1482752320. Its totient is φ = 428457600.

The previous prime is 805250021. The next prime is 805250027. The reversal of 805250025 is 520052508.

It is not a de Polignac number, because 805250025 - 2² = 805250021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (805250021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 351885 + ... + 354165.

Almost surely, 2^805250025 is an apocalyptic number.

It is an amenable number.

805250025 is a deficient number, since it is larger than the sum of its proper divisors (677502295).

805250025 is a wasteful number, since it uses less digits than its factorization.

805250025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823 (or 2812 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 805250025 is about 28376.9276878241. The cubic root of 805250025 is about 930.3440454444.

The spelling of 805250025 in words is "eight hundred five million, two hundred fifty thousand, twenty-five".