220835825 has 24 divisors (see below), whose sum is σ = 313557312. Its totient is φ = 151139520.

The previous prime is 220835821. The next prime is 220835827. The reversal of 220835825 is 528538022.

It is not a de Polignac number, because 220835825 - 2² = 220835821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220835821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131642 + ... + 133308.

It is an arithmetic number, because the mean of its divisors is an integer number (13064888).

Almost surely, 2^220835825 is an apocalyptic number.

220835825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220835825 is a deficient number, since it is larger than the sum of its proper divisors (92721487).

220835825 is a wasteful number, since it uses less digits than its factorization.

220835825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441 (or 2436 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 220835825 is about 14860.5459186397. The cubic root of 220835825 is about 604.4446101772. Note that the first 3 decimals are identical.

The spelling of 220835825 in words is "two hundred twenty million, eight hundred thirty-five thousand, eight hundred twenty-five".