80725970 has 32 divisors (see below), whose sum is σ = 156894192. Its totient is φ = 29728512.

The previous prime is 80725969. The next prime is 80725973. The reversal of 80725970 is 7952708.

It can be written as a sum of positive squares in 8 ways, for example, as 3690241 + 77035729 = 1921^2 + 8777^2 .

It is not an unprimeable number, because it can be changed into a prime (80725973) 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, 79184 + ... + 80196.

Almost surely, 2^80725970 is an apocalyptic number.

80725970 is a deficient number, since it is larger than the sum of its proper divisors (76168222).

80725970 is a wasteful number, since it uses less digits than its factorization.

80725970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 80725970 is about 8984.7632133518. The cubic root of 80725970 is about 432.1863943308.

The spelling of 80725970 in words is "eighty million, seven hundred twenty-five thousand, nine hundred seventy".