225029340 has 120 divisors (see below), whose sum is σ = 747541872. Its totient is φ = 56471040.

The previous prime is 225029339. The next prime is 225029347. The reversal of 225029340 is 43920522.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225029347) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 23455 + ... + 31625.

Almost surely, 2^225029340 is an apocalyptic number.

225029340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225029340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373770936).

225029340 is an abundant number, since it is smaller than the sum of its proper divisors (522512532).

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

225029340 is a wasteful number, since it uses less digits than its factorization.

225029340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8209 (or 8198 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 225029340 is about 15000.9779681193. The cubic root of 225029340 is about 608.2466357130.

Adding to 225029340 its reverse (43920522), we get a palindrome (268949862).

The spelling of 225029340 in words is "two hundred twenty-five million, twenty-nine thousand, three hundred forty".