220761725 has 12 divisors (see below), whose sum is σ = 274947060. Its totient is φ = 175833600.

The previous prime is 220761713. The next prime is 220761727. The reversal of 220761725 is 527167022.

It can be written as a sum of positive squares in 6 ways, for example, as 120409 + 220641316 = 347^2 + 14854^2 .

It is not a de Polignac number, because 220761725 - 2⁸ = 220761469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220761691 and 220761700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220761727) 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, 13556 + ... + 25005.

It is an arithmetic number, because the mean of its divisors is an integer number (22912255).

Almost surely, 2^220761725 is an apocalyptic number.

220761725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220761725 is a deficient number, since it is larger than the sum of its proper divisors (54185335).

220761725 is a wasteful number, since it uses less digits than its factorization.

220761725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38800 (or 38795 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 220761725 is about 14858.0525305304. The cubic root of 220761725 is about 604.3769968176.

The spelling of 220761725 in words is "two hundred twenty million, seven hundred sixty-one thousand, seven hundred twenty-five".