80825919 has 16 divisors (see below), whose sum is σ = 109768320. Its totient is φ = 52889760.

The previous prime is 80825909. The next prime is 80825923. The reversal of 80825919 is 91952808.

It is a happy number.

It is not a de Polignac number, because 80825919 - 2⁸ = 80825663 is a prime.

It is a super-2 number, since 2×80825919² = 13065658364389122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80825909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75649 + ... + 76709.

It is an arithmetic number, because the mean of its divisors is an integer number (6860520).

Almost surely, 2^80825919 is an apocalyptic number.

80825919 is a deficient number, since it is larger than the sum of its proper divisors (28942401).

80825919 is a wasteful number, since it uses less digits than its factorization.

80825919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510.

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 80825919 is about 8990.3236315496. The cubic root of 80825919 is about 432.3646879768.

The spelling of 80825919 in words is "eighty million, eight hundred twenty-five thousand, nine hundred nineteen".