245725211 has 2 divisors, whose sum is σ = 245725212. Its totient is φ = 245725210.

The previous prime is 245725187. The next prime is 245725213. The reversal of 245725211 is 112527542.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245725211 is a prime.

It is a Sophie Germain prime.

Together with 245725213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245725213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122862605 + 122862606.

It is an arithmetic number, because the mean of its divisors is an integer number (122862606).

Almost surely, 2^245725211 is an apocalyptic number.

245725211 is a deficient number, since it is larger than the sum of its proper divisors (1).

245725211 is an equidigital number, since it uses as much as digits as its factorization.

245725211 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 245725211 is about 15675.6247403413. The cubic root of 245725211 is about 626.3492651310.

The spelling of 245725211 in words is "two hundred forty-five million, seven hundred twenty-five thousand, two hundred eleven".