780580025 has 24 divisors (see below), whose sum is σ = 988858584. Its totient is φ = 611020800.

The previous prime is 780580019. The next prime is 780580027. The reversal of 780580025 is 520085087.

It can be written as a sum of positive squares in 12 ways, for example, as 606841 + 779973184 = 779^2 + 27928^2 .

It is not a de Polignac number, because 780580025 - 2²² = 776385721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780580027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 764015 + ... + 765035.

It is an arithmetic number, because the mean of its divisors is an integer number (41202441).

Almost surely, 2^780580025 is an apocalyptic number.

It is an amenable number.

780580025 is a deficient number, since it is larger than the sum of its proper divisors (208278559).

780580025 is a wasteful number, since it uses less digits than its factorization.

780580025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661 (or 1656 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 780580025 is about 27938.8622710375. The cubic root of 780580025 is about 920.7445237383.

The spelling of 780580025 in words is "seven hundred eighty million, five hundred eighty thousand, twenty-five".