780923025 has 99 divisors (see below), whose sum is σ = 1518406939. Its totient is φ = 398383920.

The previous prime is 780922993. The next prime is 780923051. The reversal of 780923025 is 520329087.

It is a happy number.

The square root of 780923025 is 27945.

It is a perfect power (a square), and thus also a powerful number.

780923025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 281132289 + 499790736 = 16767^2 + 22356^2 .

It is not a de Polignac number, because 780923025 - 2⁵ = 780922993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 98 ways as a sum of consecutive naturals, for example, 33953164 + ... + 33953186.

Almost surely, 2^780923025 is an apocalyptic number.

780923025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

780923025 is the 27945-th square number.

780923025 is the 13973-rd centered octagonal number.

It is an amenable number.

780923025 is a deficient number, since it is larger than the sum of its proper divisors (737483914).

780923025 is an frugal number, since it uses more digits than its factorization.

780923025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 31 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The cubic root of 780923025 is about 920.8793675359.

Multiplying 780923025 by its sum of digits (36), we get a square (28113228900 = 167670²).

The spelling of 780923025 in words is "seven hundred eighty million, nine hundred twenty-three thousand, twenty-five".