225424136690 has 16 divisors (see below), whose sum is σ = 406265022360. Its totient is φ = 90058193280.

The previous prime is 225424136671. The next prime is 225424136699. The reversal of 225424136690 is 96631424522.

It can be written as a sum of positive squares in 4 ways, for example, as 208866366361 + 16557770329 = 457019^2 + 128677^2 .

It is a super-2 number, since 2×225424136690² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225424136699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13924181 + ... + 13940360.

Almost surely, 2^225424136690 is an apocalyptic number.

225424136690 is a deficient number, since it is larger than the sum of its proper divisors (180840885670).

225424136690 is a wasteful number, since it uses less digits than its factorization.

225424136690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27865357.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 225424136690 in words is "two hundred twenty-five billion, four hundred twenty-four million, one hundred thirty-six thousand, six hundred ninety".