850905025 has 24 divisors (see below), whose sum is σ = 1127274080. Its totient is φ = 635247360.

The previous prime is 850905023. The next prime is 850905053. The reversal of 850905025 is 520509058.

It is not a de Polignac number, because 850905025 - 2¹ = 850905023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (850905023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18457 + ... + 45193.

Almost surely, 2^850905025 is an apocalyptic number.

It is an amenable number.

850905025 is a deficient number, since it is larger than the sum of its proper divisors (276369055).

850905025 is a wasteful number, since it uses less digits than its factorization.

850905025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26833 (or 26828 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 850905025 is about 29170.2763956737. The cubic root of 850905025 is about 947.6043145780.

The spelling of 850905025 in words is "eight hundred fifty million, nine hundred five thousand, twenty-five".