85505225 has 48 divisors (see below), whose sum is σ = 122700480. Its totient is φ = 58579200.

The previous prime is 85505221. The next prime is 85505227. The reversal of 85505225 is 52250558.

It is not a de Polignac number, because 85505225 - 2² = 85505221 is a prime.

It is a super-2 number, since 2×85505225² = 14622287004601250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85505191 and 85505200.

It is not an unprimeable number, because it can be changed into a prime (85505221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 376562 + ... + 376788.

It is an arithmetic number, because the mean of its divisors is an integer number (2556260).

Almost surely, 2^85505225 is an apocalyptic number.

It is an amenable number.

85505225 is a deficient number, since it is larger than the sum of its proper divisors (37195255).

85505225 is a wasteful number, since it uses less digits than its factorization.

85505225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The square root of 85505225 is about 9246.9035357789. The cubic root of 85505225 is about 440.5523795951.

The spelling of 85505225 in words is "eighty-five million, five hundred five thousand, two hundred twenty-five".