1963865425 has 12 divisors (see below), whose sum is σ = 2435844096. Its totient is φ = 1570672400.

The previous prime is 1963865401. The next prime is 1963865461. The reversal of 1963865425 is 5245683691.

It is a de Polignac number, because none of the positive numbers 2^k-1963865425 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113712 + ... + 129838.

It is an arithmetic number, because the mean of its divisors is an integer number (202987008).

Almost surely, 2^1963865425 is an apocalyptic number.

It is an amenable number.

1963865425 is a deficient number, since it is larger than the sum of its proper divisors (471978671).

1963865425 is a wasteful number, since it uses less digits than its factorization.

1963865425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21008 (or 21003 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

The square root of 1963865425 is about 44315.5212651279. The cubic root of 1963865425 is about 1252.2871034407.

The spelling of 1963865425 in words is "one billion, nine hundred sixty-three million, eight hundred sixty-five thousand, four hundred twenty-five".