220525969 has 2 divisors, whose sum is σ = 220525970. Its totient is φ = 220525968.

The previous prime is 220525967. The next prime is 220526039. The reversal of 220525969 is 969525022.

220525969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150970369 + 69555600 = 12287^2 + 8340^2 .

It is a cyclic number.

It is not a de Polignac number, because 220525969 - 2¹ = 220525967 is a prime.

It is a super-2 number, since 2×220525969² = 97263406006777922, which contains 22 as substring.

Together with 220525967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (220525967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110262984 + 110262985.

It is an arithmetic number, because the mean of its divisors is an integer number (110262985).

Almost surely, 2^220525969 is an apocalyptic number.

It is an amenable number.

220525969 is a deficient number, since it is larger than the sum of its proper divisors (1).

220525969 is an equidigital number, since it uses as much as digits as its factorization.

220525969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 220525969 is about 14850.1168008875. The cubic root of 220525969 is about 604.1617779665.

The spelling of 220525969 in words is "two hundred twenty million, five hundred twenty-five thousand, nine hundred sixty-nine".