845425225 has 12 divisors (see below), whose sum is σ = 1049648220. Its totient is φ = 675488000.

The previous prime is 845425129. The next prime is 845425241. The reversal of 845425225 is 522524548.

It can be written as a sum of positive squares in 6 ways, for example, as 67963536 + 777461689 = 8244^2 + 27883^2 .

It is not a de Polignac number, because 845425225 - 2²³ = 837036617 is a prime.

It is a super-2 number, since 2×845425225² = 1429487622132601250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 676 + ... + 41125.

It is an arithmetic number, because the mean of its divisors is an integer number (87470685).

Almost surely, 2^845425225 is an apocalyptic number.

It is an amenable number.

845425225 is a deficient number, since it is larger than the sum of its proper divisors (204222995).

845425225 is a wasteful number, since it uses less digits than its factorization.

845425225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42620 (or 42615 counting only the distinct ones).

The product of its digits is 128000, while the sum is 37.

The square root of 845425225 is about 29076.1968799222. The cubic root of 845425225 is about 945.5657521364.

It can be divided in two parts, 845425 and 225, that added together give a triangular number (845650 = T₁₃₀₀).

The spelling of 845425225 in words is "eight hundred forty-five million, four hundred twenty-five thousand, two hundred twenty-five".