8525140 has 24 divisors (see below), whose sum is σ = 19280520. Its totient is φ = 3147648.

The previous prime is 8525131. The next prime is 8525141. The reversal of 8525140 is 415258.

It can be written as a sum of positive squares in 4 ways, for example, as 126736 + 8398404 = 356^2 + 2898^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8525141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16135 + ... + 16654.

It is an arithmetic number, because the mean of its divisors is an integer number (803355).

Almost surely, 2^8525140 is an apocalyptic number.

It is an amenable number.

8525140 is an abundant number, since it is smaller than the sum of its proper divisors (10755380).

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

8525140 is a wasteful number, since it uses less digits than its factorization.

8525140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32811 (or 32809 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 8525140 is about 2919.7842386039. The cubic root of 8525140 is about 204.2837586469.

The spelling of 8525140 in words is "eight million, five hundred twenty-five thousand, one hundred forty".