1623603225 has 24 divisors (see below), whose sum is σ = 2700452160. Its totient is φ = 860729920.

The previous prime is 1623603217. The next prime is 1623603227. The reversal of 1623603225 is 5223063261.

It is not a de Polignac number, because 1623603225 - 2³ = 1623603217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1623603192 and 1623603201.

It is not an unprimeable number, because it can be changed into a prime (1623603227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52290 + ... + 77339.

It is an arithmetic number, because the mean of its divisors is an integer number (112518840).

Almost surely, 2^1623603225 is an apocalyptic number.

1623603225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1623603225 is a deficient number, since it is larger than the sum of its proper divisors (1076848935).

1623603225 is a wasteful number, since it uses less digits than its factorization.

1623603225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129809 (or 129804 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 1623603225 is about 40293.9601553384. The cubic root of 1623603225 is about 1175.3303975050.

Adding to 1623603225 its reverse (5223063261), we get a palindrome (6846666486).

The spelling of 1623603225 in words is "one billion, six hundred twenty-three million, six hundred three thousand, two hundred twenty-five".