245225389 has 2 divisors, whose sum is σ = 245225390. Its totient is φ = 245225388.

The previous prime is 245225369. The next prime is 245225413. The reversal of 245225389 is 983522542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152102889 + 93122500 = 12333^2 + 9650^2 .

It is a cyclic number.

It is not a de Polignac number, because 245225389 - 2²³ = 236836781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245225339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122612694 + 122612695.

It is an arithmetic number, because the mean of its divisors is an integer number (122612695).

Almost surely, 2^245225389 is an apocalyptic number.

It is an amenable number.

245225389 is a deficient number, since it is larger than the sum of its proper divisors (1).

245225389 is an equidigital number, since it uses as much as digits as its factorization.

245225389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 40.

The square root of 245225389 is about 15659.6739748949. The cubic root of 245225389 is about 625.9242976842.

The spelling of 245225389 in words is "two hundred forty-five million, two hundred twenty-five thousand, three hundred eighty-nine".