725542211 has 2 divisors, whose sum is σ = 725542212. Its totient is φ = 725542210.

The previous prime is 725542187. The next prime is 725542217. The reversal of 725542211 is 112245527.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (112245527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725542211 - 2¹⁸ = 725280067 is a prime.

It is a super-2 number, since 2×725542211² = 1052822999885537042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (725542217) 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 as a sum of consecutive naturals, namely, 362771105 + 362771106.

It is an arithmetic number, because the mean of its divisors is an integer number (362771106).

Almost surely, 2^725542211 is an apocalyptic number.

725542211 is a deficient number, since it is larger than the sum of its proper divisors (1).

725542211 is an equidigital number, since it uses as much as digits as its factorization.

725542211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600, while the sum is 29.

The square root of 725542211 is about 26935.8907593567. The cubic root of 725542211 is about 898.5747858269.

Adding to 725542211 its reverse (112245527), we get a palindrome (837787738).

The spelling of 725542211 in words is "seven hundred twenty-five million, five hundred forty-two thousand, two hundred eleven".