80125739 has 4 divisors (see below), whose sum is σ = 80156856. Its totient is φ = 80094624.

The previous prime is 80125733. The next prime is 80125763. The reversal of 80125739 is 93752108.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80125739 - 2⁴ = 80125723 is a prime.

It is a super-2 number, since 2×80125739² = 12840268100592242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80125699 and 80125708.

It is not an unprimeable number, because it can be changed into a prime (80125733) 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, 11309 + ... + 16974.

It is an arithmetic number, because the mean of its divisors is an integer number (20039214).

Almost surely, 2^80125739 is an apocalyptic number.

80125739 is a deficient number, since it is larger than the sum of its proper divisors (31117).

80125739 is a wasteful number, since it uses less digits than its factorization.

80125739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31116.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 80125739 is about 8951.2981740081. The cubic root of 80125739 is about 431.1125668907.

The spelling of 80125739 in words is "eighty million, one hundred twenty-five thousand, seven hundred thirty-nine".