225601530 has 128 divisors (see below), whose sum is σ = 681246720. Its totient is φ = 46448640.

The previous prime is 225601517. The next prime is 225601559. The reversal of 225601530 is 35106522.

It is a self number, because there is not a number n which added to its sum of digits gives 225601530.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 292986 + ... + 293754.

It is an arithmetic number, because the mean of its divisors is an integer number (5322240).

Almost surely, 2^225601530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225601530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340623360).

225601530 is an abundant number, since it is smaller than the sum of its proper divisors (455645190).

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

225601530 is a wasteful number, since it uses less digits than its factorization.

225601530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 225601530 is about 15020.0376164642. The cubic root of 225601530 is about 608.7617360602.

It can be divided in two parts, 22560 and 1530, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 225601530 in words is "two hundred twenty-five million, six hundred one thousand, five hundred thirty".