851525 has 6 divisors (see below), whose sum is σ = 1055922. Its totient is φ = 681200.

The previous prime is 851519. The next prime is 851537. The reversal of 851525 is 525158.

It can be written as a sum of positive squares in 3 ways, for example, as 16129 + 835396 = 127^2 + 914^2 .

It is not a de Polignac number, because 851525 - 2¹⁴ = 835141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 851494 and 851503.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 851525.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17006 + ... + 17055.

It is an arithmetic number, because the mean of its divisors is an integer number (175987).

2⁸⁵¹⁵²⁵ is an apocalyptic number.

It is an amenable number.

851525 is a deficient number, since it is larger than the sum of its proper divisors (204397).

851525 is a wasteful number, since it uses less digits than its factorization.

851525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34071 (or 34066 counting only the distinct ones).

The product of its digits is 2000, while the sum is 26.

The square root of 851525 is about 922.7811224770. The cubic root of 851525 is about 94.7834402285.

The spelling of 851525 in words is "eight hundred fifty-one thousand, five hundred twenty-five".