780517225 has 12 divisors (see below), whose sum is σ = 999063040. Its totient is φ = 604270800.

The previous prime is 780517189. The next prime is 780517229. The reversal of 780517225 is 522715087.

It is not a de Polignac number, because 780517225 - 2¹³ = 780509033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (780517229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 502785 + ... + 504334.

Almost surely, 2^780517225 is an apocalyptic number.

It is an amenable number.

780517225 is a deficient number, since it is larger than the sum of its proper divisors (218545815).

780517225 is a wasteful number, since it uses less digits than its factorization.

780517225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007160 (or 1007155 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 780517225 is about 27937.7383658735. The cubic root of 780517225 is about 920.7198308582.

The spelling of 780517225 in words is "seven hundred eighty million, five hundred seventeen thousand, two hundred twenty-five".