222297525 has 72 divisors (see below), whose sum is σ = 426970440. Its totient is φ = 110161920.

The previous prime is 222297469. The next prime is 222297539. The reversal of 222297525 is 525792222.

222297525 is a `hidden beast` number, since 22 + 22 + 97 + 525 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 90897156 + 131400369 = 9534^2 + 11463^2 .

It is not a de Polignac number, because 222297525 - 2¹² = 222293429 is a prime.

It is a super-2 number, since 2×222297525² = 98832379242251250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222297525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 340099 + ... + 340751.

It is an arithmetic number, because the mean of its divisors is an integer number (5930145).

Almost surely, 2^222297525 is an apocalyptic number.

222297525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222297525 is a deficient number, since it is larger than the sum of its proper divisors (204672915).

222297525 is a wasteful number, since it uses less digits than its factorization.

222297525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 767 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 222297525 is about 14909.6453680160. The cubic root of 222297525 is about 605.7752736649.

The spelling of 222297525 in words is "two hundred twenty-two million, two hundred ninety-seven thousand, five hundred twenty-five".