80725515 has 64 divisors (see below), whose sum is σ = 149022720. Its totient is φ = 37002240.

The previous prime is 80725507. The next prime is 80725549. The reversal of 80725515 is 51552708.

It is a happy number.

It is not a de Polignac number, because 80725515 - 2³ = 80725507 is a prime.

It is a super-3 number, since 3×80725515³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 183666 + ... + 184104.

It is an arithmetic number, because the mean of its divisors is an integer number (2328480).

Almost surely, 2^80725515 is an apocalyptic number.

80725515 is a deficient number, since it is larger than the sum of its proper divisors (68297205).

80725515 is a wasteful number, since it uses less digits than its factorization.

80725515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524.

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 80725515 is about 8984.7378926711. The cubic root of 80725515 is about 432.1855823444.

The spelling of 80725515 in words is "eighty million, seven hundred twenty-five thousand, five hundred fifteen".