1679920825 has 24 divisors (see below), whose sum is σ = 2285675136. Its totient is φ = 1214664000.

The previous prime is 1679920817. The next prime is 1679920831. The reversal of 1679920825 is 5280299761.

It is not a de Polignac number, because 1679920825 - 2³ = 1679920817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29920 + ... + 65230.

It is an arithmetic number, because the mean of its divisors is an integer number (95236464).

Almost surely, 2^1679920825 is an apocalyptic number.

It is an amenable number.

1679920825 is a deficient number, since it is larger than the sum of its proper divisors (605754311).

1679920825 is a wasteful number, since it uses less digits than its factorization.

1679920825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35505 (or 35500 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 1679920825 is about 40986.8372163552. The cubic root of 1679920825 is about 1188.7657152584.

The spelling of 1679920825 in words is "one billion, six hundred seventy-nine million, nine hundred twenty thousand, eight hundred twenty-five".