220904700025 has 81 divisors (see below), whose sum is σ = 295530422733. Its totient is φ = 163787342400.

The previous prime is 220904699993. The next prime is 220904700041. The reversal of 220904700025 is 520007409022.

The square root of 220904700025 is 470005.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 101752706169 + 119151993856 = 318987^2 + 345184^2 .

It is not a de Polignac number, because 220904700025 - 2⁵ = 220904699993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220904700025.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 3297085042 + ... + 3297085108.

Almost surely, 2^220904700025 is an apocalyptic number.

220904700025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

220904700025 is the 470005-th square number.

220904700025 is the 235003-rd centered octagonal number.

It is an amenable number.

220904700025 is a deficient number, since it is larger than the sum of its proper divisors (74625722708).

220904700025 is an frugal number, since it uses more digits than its factorization.

220904700025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 220904700025 in words is "two hundred twenty billion, nine hundred four million, seven hundred thousand, twenty-five".