852525257 has 4 divisors (see below), whose sum is σ = 852587460. Its totient is φ = 852463056.

The previous prime is 852525227. The next prime is 852525263. The reversal of 852525257 is 752525258.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 481539136 + 370986121 = 21944^2 + 19261^2 .

It is a cyclic number.

It is not a de Polignac number, because 852525257 - 2¹⁴ = 852508873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (852525227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518 + ... + 41295.

It is an arithmetic number, because the mean of its divisors is an integer number (213146865).

Almost surely, 2^852525257 is an apocalyptic number.

It is an amenable number.

852525257 is a deficient number, since it is larger than the sum of its proper divisors (62203).

852525257 is a wasteful number, since it uses less digits than its factorization.

852525257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62202.

The product of its digits is 280000, while the sum is 41.

The square root of 852525257 is about 29198.0351564964. The cubic root of 852525257 is about 948.2053865051.

Subtracting from 852525257 its reverse (752525258), we obtain a palindrome (99999999).

It can be divided in two parts, 85252 and 5257, that added together give a palindrome (90509).

The spelling of 852525257 in words is "eight hundred fifty-two million, five hundred twenty-five thousand, two hundred fifty-seven".