82500890 has 8 divisors (see below), whose sum is σ = 148501620. Its totient is φ = 33000352.

The previous prime is 82500883. The next prime is 82500893. The reversal of 82500890 is 9800528.

It is a Cunningham number, because it is equal to 9083²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 82500889 + 1 = 9083^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (82500893) 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, 4125035 + ... + 4125054.

Almost surely, 2^82500890 is an apocalyptic number.

82500890 is a deficient number, since it is larger than the sum of its proper divisors (66000730).

82500890 is a wasteful number, since it uses less digits than its factorization.

82500890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8250096.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 82500890 is about 9083.0000550479. Note that the first 4 decimals coincide. The cubic root of 82500890 is about 435.3309499799.

The spelling of 82500890 in words is "eighty-two million, five hundred thousand, eight hundred ninety".