85161225 has 12 divisors (see below), whose sum is σ = 140800016. Its totient is φ = 45419280.

The previous prime is 85161217. The next prime is 85161229. The reversal of 85161225 is 52216158.

It is not a de Polignac number, because 85161225 - 2³ = 85161217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85161192 and 85161201.

It is not an unprimeable number, because it can be changed into a prime (85161229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 567667 + ... + 567816.

Almost surely, 2^85161225 is an apocalyptic number.

It is an amenable number.

85161225 is a deficient number, since it is larger than the sum of its proper divisors (55638791).

85161225 is a wasteful number, since it uses less digits than its factorization.

85161225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135496 (or 1135491 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 85161225 is about 9228.2839683226. The cubic root of 85161225 is about 439.9607833505.

The spelling of 85161225 in words is "eighty-five million, one hundred sixty-one thousand, two hundred twenty-five".