82509250 has 16 divisors (see below), whose sum is σ = 154457784. Its totient is φ = 33003600.

The previous prime is 82509241. The next prime is 82509277. The reversal of 82509250 is 5290528.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22648081 + 59861169 = 4759^2 + 7737^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164769 + ... + 165268.

Almost surely, 2^82509250 is an apocalyptic number.

82509250 is a deficient number, since it is larger than the sum of its proper divisors (71948534).

82509250 is a wasteful number, since it uses less digits than its factorization.

82509250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330054 (or 330044 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 82509250 is about 9083.4602437617. The cubic root of 82509250 is about 435.3456538367.

Adding to 82509250 its reverse (5290528), we get a palindrome (87799778).

The spelling of 82509250 in words is "eighty-two million, five hundred nine thousand, two hundred fifty".