81250695 has 28 divisors (see below), whose sum is σ = 146190936. Its totient is φ = 43331760.

The previous prime is 81250657. The next prime is 81250703. The reversal of 81250695 is 59605218.

It is a happy number.

It is not a de Polignac number, because 81250695 - 2⁷ = 81250567 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 7501 + ... + 14790.

Almost surely, 2^81250695 is an apocalyptic number.

81250695 is a deficient number, since it is larger than the sum of its proper divisors (64940241).

81250695 is an equidigital number, since it uses as much as digits as its factorization.

81250695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22314 (or 22299 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 81250695 is about 9013.9167402412. The cubic root of 81250695 is about 433.1207876129.

The spelling of 81250695 in words is "eighty-one million, two hundred fifty thousand, six hundred ninety-five".