80687925 has 18 divisors (see below), whose sum is σ = 144521442. Its totient is φ = 43033440.

The previous prime is 80687897. The next prime is 80687939. The reversal of 80687925 is 52978608.

It can be written as a sum of positive squares in 3 ways, for example, as 2842596 + 77845329 = 1686^2 + 8823^2 .

It is not a de Polignac number, because 80687925 - 2⁸ = 80687669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 179082 + ... + 179531.

It is an arithmetic number, because the mean of its divisors is an integer number (8028969).

Almost surely, 2^80687925 is an apocalyptic number.

It is an amenable number.

80687925 is a deficient number, since it is larger than the sum of its proper divisors (63833517).

80687925 is a wasteful number, since it uses less digits than its factorization.

80687925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358629 (or 358621 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 80687925 is about 8982.6457683691. The cubic root of 80687925 is about 432.1184892313.

The spelling of 80687925 in words is "eighty million, six hundred eighty-seven thousand, nine hundred twenty-five".