850525505 has 4 divisors (see below), whose sum is σ = 1020630612. Its totient is φ = 680420400.

The previous prime is 850525499. The next prime is 850525513. The reversal of 850525505 is 505525058.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 496220176 + 354305329 = 22276^2 + 18823^2 .

It is not a de Polignac number, because 850525505 - 2¹² = 850521409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85052546 + ... + 85052555.

It is an arithmetic number, because the mean of its divisors is an integer number (255157653).

Almost surely, 2^850525505 is an apocalyptic number.

It is an amenable number.

850525505 is a deficient number, since it is larger than the sum of its proper divisors (170105107).

850525505 is a wasteful number, since it uses less digits than its factorization.

850525505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170105106.

The product of its (nonzero) digits is 50000, while the sum is 35.

The square root of 850525505 is about 29163.7704181061. The cubic root of 850525505 is about 947.4634103799.

The spelling of 850525505 in words is "eight hundred fifty million, five hundred twenty-five thousand, five hundred five".