1663233625 has 32 divisors (see below), whose sum is σ = 2119328640. Its totient is φ = 1302840000.

The previous prime is 1663233623. The next prime is 1663233643. The reversal of 1663233625 is 5263323661.

It is not a de Polignac number, because 1663233625 - 2¹ = 1663233623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1663233623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2523546 + ... + 2524204.

It is an arithmetic number, because the mean of its divisors is an integer number (66229020).

Almost surely, 2^1663233625 is an apocalyptic number.

It is an amenable number.

1663233625 is a deficient number, since it is larger than the sum of its proper divisors (456095015).

1663233625 is an equidigital number, since it uses as much as digits as its factorization.

1663233625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066 (or 1056 counting only the distinct ones).

The product of its digits is 116640, while the sum is 37.

The square root of 1663233625 is about 40782.7613704614. The cubic root of 1663233625 is about 1184.8164777184.

The spelling of 1663233625 in words is "one billion, six hundred sixty-three million, two hundred thirty-three thousand, six hundred twenty-five".