225023100 has 36 divisors (see below), whose sum is σ = 651067704. Its totient is φ = 60006080.

The previous prime is 225023089. The next prime is 225023111. The reversal of 225023100 is 1320522.

It is an interprime number because it is at equal distance from previous prime (225023089) and next prime (225023111).

It is a super-2 number, since 2×225023100² = 101270791067220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 225023100.

It is a congruent 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, 374739 + ... + 375338.

It is an arithmetic number, because the mean of its divisors is an integer number (18085214).

Almost surely, 2^225023100 is an apocalyptic number.

225023100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225023100 is an abundant number, since it is smaller than the sum of its proper divisors (426044604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225023100 is a wasteful number, since it uses less digits than its factorization.

225023100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750094 (or 750087 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 225023100 is about 15000.7699802377. The cubic root of 225023100 is about 608.2410134919.

Adding to 225023100 its reverse (1320522), we get a palindrome (226343622).

The spelling of 225023100 in words is "two hundred twenty-five million, twenty-three thousand, one hundred".