1679770225 has 27 divisors (see below), whose sum is σ = 2425053771. Its totient is φ = 1150858800.

The previous prime is 1679770193. The next prime is 1679770229. The reversal of 1679770225 is 5220779761.

The square root of 1679770225 is 40985.

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

It can be written as a sum of positive squares in only one way, i.e., 604717281 + 1075052944 = 24591^2 + 32788^2 .

It is not a de Polignac number, because 1679770225 - 2⁵ = 1679770193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1679770229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1433890 + ... + 1435060.

Almost surely, 2^1679770225 is an apocalyptic number.

1679770225 is the 40985-th square number.

1679770225 is the 20493-rd centered octagonal number.

It is an amenable number.

1679770225 is a deficient number, since it is larger than the sum of its proper divisors (745283546).

1679770225 is an frugal number, since it uses more digits than its factorization.

1679770225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366 (or 1183 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 46.

The cubic root of 1679770225 is about 1188.7301910710.

The spelling of 1679770225 in words is "one billion, six hundred seventy-nine million, seven hundred seventy thousand, two hundred twenty-five".