850009425 has 24 divisors (see below), whose sum is σ = 1410725184. Its totient is φ = 451604160.

The previous prime is 850009421. The next prime is 850009463. The reversal of 850009425 is 524900058.

It is not a de Polignac number, because 850009425 - 2² = 850009421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (850009421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1822 + ... + 41271.

It is an arithmetic number, because the mean of its divisors is an integer number (58780216).

Almost surely, 2^850009425 is an apocalyptic number.

It is an amenable number.

850009425 is a deficient number, since it is larger than the sum of its proper divisors (560715759).

850009425 is a wasteful number, since it uses less digits than its factorization.

850009425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43369 (or 43364 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 850009425 is about 29154.9211111949. The cubic root of 850009425 is about 947.2717383507.

The spelling of 850009425 in words is "eight hundred fifty million, nine thousand, four hundred twenty-five".