225251532 has 72 divisors (see below), whose sum is σ = 625427712. Its totient is φ = 67788000.

The previous prime is 225251531. The next prime is 225251539. The reversal of 225251532 is 235152522.

It is a junction number, because it is equal to n+sod(n) for n = 225251496 and 225251505.

It is not an unprimeable number, because it can be changed into a prime (225251531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57913 + ... + 61679.

It is an arithmetic number, because the mean of its divisors is an integer number (8686496).

Almost surely, 2^225251532 is an apocalyptic number.

225251532 is a gapful number since it is divisible by the number (22) 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 225251532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312713856).

225251532 is an abundant number, since it is smaller than the sum of its proper divisors (400176180).

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

225251532 is a wasteful number, since it uses less digits than its factorization.

225251532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939 (or 3934 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 225251532 is about 15008.3820580368. The cubic root of 225251532 is about 608.4467623271.

The spelling of 225251532 in words is "two hundred twenty-five million, two hundred fifty-one thousand, five hundred thirty-two".