1623100225 has 24 divisors (see below), whose sum is σ = 2103561792. Its totient is φ = 1240008000.

The previous prime is 1623100223. The next prime is 1623100243. The reversal of 1623100225 is 5220013261.

It is not a de Polignac number, because 1623100225 - 2¹ = 1623100223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1623100196 and 1623100205.

It is not an unprimeable number, because it can be changed into a prime (1623100223) 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, 419550 + ... + 423400.

It is an arithmetic number, because the mean of its divisors is an integer number (87648408).

Almost surely, 2^1623100225 is an apocalyptic number.

It is an amenable number.

1623100225 is a deficient number, since it is larger than the sum of its proper divisors (480461567).

1623100225 is a wasteful number, since it uses less digits than its factorization.

1623100225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4617 (or 4612 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1623100225 is about 40287.7180416067. The cubic root of 1623100225 is about 1175.2090106533.

Adding to 1623100225 its reverse (5220013261), we get a palindrome (6843113486).

The spelling of 1623100225 in words is "one billion, six hundred twenty-three million, one hundred thousand, two hundred twenty-five".