81250854 has 32 divisors (see below), whose sum is σ = 172523520. Its totient is φ = 25421952.

The previous prime is 81250823. The next prime is 81250867. The reversal of 81250854 is 45805218.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48027 + ... + 49689.

It is an arithmetic number, because the mean of its divisors is an integer number (5391360).

Almost surely, 2^81250854 is an apocalyptic number.

81250854 is an abundant number, since it is smaller than the sum of its proper divisors (91272666).

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

81250854 is a wasteful number, since it uses less digits than its factorization.

81250854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 81250854 is about 9013.9255599323. The cubic root of 81250854 is about 433.1210701384.

The spelling of 81250854 in words is "eighty-one million, two hundred fifty thousand, eight hundred fifty-four".