225207810 has 64 divisors (see below), whose sum is σ = 606816000. Its totient is φ = 59429376.

The previous prime is 225207803. The next prime is 225207821. The reversal of 225207810 is 18702522.

It is a super-2 number, since 2×225207810² = 101437115369992200, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21891 + ... + 30489.

It is an arithmetic number, because the mean of its divisors is an integer number (9481500).

Almost surely, 2^225207810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225207810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303408000).

225207810 is an abundant number, since it is smaller than the sum of its proper divisors (381608190).

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

225207810 is a wasteful number, since it uses less digits than its factorization.

225207810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8712 (or 8706 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 225207810 is about 15006.9254012939. The cubic root of 225207810 is about 608.4073926641.

The spelling of 225207810 in words is "two hundred twenty-five million, two hundred seven thousand, eight hundred ten".