85825240 has 16 divisors (see below), whose sum is σ = 193106880. Its totient is φ = 34330080.

The previous prime is 85825219. The next prime is 85825241. The reversal of 85825240 is 4252858.

85825240 = 2385² + 2386² + ... + 2399².

It is a junction number, because it is equal to n+sod(n) for n = 85825196 and 85825205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85825241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072776 + ... + 1072855.

It is an arithmetic number, because the mean of its divisors is an integer number (12069180).

Almost surely, 2^85825240 is an apocalyptic number.

It is an amenable number.

85825240 is an abundant number, since it is smaller than the sum of its proper divisors (107281640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85825240 is a wasteful number, since it uses less digits than its factorization.

85825240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145642 (or 2145638 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 85825240 is about 9264.1912760910. The cubic root of 85825240 is about 441.1013045345.

The spelling of 85825240 in words is "eighty-five million, eight hundred twenty-five thousand, two hundred forty".