220425405 has 16 divisors (see below), whose sum is σ = 357146880. Its totient is φ = 116071488.

The previous prime is 220425379. The next prime is 220425409. The reversal of 220425405 is 504524022.

It is a happy number.

It is not a de Polignac number, because 220425405 - 2¹⁶ = 220359869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220425409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91822 + ... + 94191.

It is an arithmetic number, because the mean of its divisors is an integer number (22321680).

Almost surely, 2^220425405 is an apocalyptic number.

It is an amenable number.

220425405 is a deficient number, since it is larger than the sum of its proper divisors (136721475).

220425405 is a wasteful number, since it uses less digits than its factorization.

220425405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186100.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 220425405 is about 14846.7304481492. The cubic root of 220425405 is about 604.0699276158.

Adding to 220425405 its reverse (504524022), we get a palindrome (724949427).

The spelling of 220425405 in words is "two hundred twenty million, four hundred twenty-five thousand, four hundred five".