82791425 has 6 divisors (see below), whose sum is σ = 102661398. Its totient is φ = 66233120.

The previous prime is 82791409. The next prime is 82791437. The reversal of 82791425 is 52419728.

It can be written as a sum of positive squares in 3 ways, for example, as 4804864 + 77986561 = 2192^2 + 8831^2 .

It is not a de Polignac number, because 82791425 - 2⁴ = 82791409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1655804 + ... + 1655853.

It is an arithmetic number, because the mean of its divisors is an integer number (17110233).

Almost surely, 2^82791425 is an apocalyptic number.

It is an amenable number.

82791425 is a deficient number, since it is larger than the sum of its proper divisors (19869973).

82791425 is a wasteful number, since it uses less digits than its factorization.

82791425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311667 (or 3311662 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 82791425 is about 9098.9793383654. The cubic root of 82791425 is about 435.8413715365.

The spelling of 82791425 in words is "eighty-two million, seven hundred ninety-one thousand, four hundred twenty-five".