222500525 has 12 divisors (see below), whose sum is σ = 297124212. Its totient is φ = 164307840.

The previous prime is 222500521. The next prime is 222500561. The reversal of 222500525 is 525005222.

It is a happy number.

222500525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 4583881 + 217916644 = 2141^2 + 14762^2 .

It is not a de Polignac number, because 222500525 - 2² = 222500521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222500525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222500521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341984 + ... + 342633.

It is an arithmetic number, because the mean of its divisors is an integer number (24760351).

Almost surely, 2^222500525 is an apocalyptic number.

222500525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222500525 is a deficient number, since it is larger than the sum of its proper divisors (74623687).

222500525 is a wasteful number, since it uses less digits than its factorization.

222500525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684640 (or 684635 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 222500525 is about 14916.4514882059. The cubic root of 222500525 is about 605.9596136497.

Adding to 222500525 its reverse (525005222), we get a palindrome (747505747).

The spelling of 222500525 in words is "two hundred twenty-two million, five hundred thousand, five hundred twenty-five".