425304251 has 2 divisors, whose sum is σ = 425304252. Its totient is φ = 425304250.

The previous prime is 425304241. The next prime is 425304287. The reversal of 425304251 is 152403524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425304251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425304251.

It is not a weakly prime, because it can be changed into another prime (425304241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212652125 + 212652126.

It is an arithmetic number, because the mean of its divisors is an integer number (212652126).

Almost surely, 2^425304251 is an apocalyptic number.

425304251 is a deficient number, since it is larger than the sum of its proper divisors (1).

425304251 is an equidigital number, since it uses as much as digits as its factorization.

425304251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 425304251 is about 20622.9059785473. The cubic root of 425304251 is about 752.0266673007.

Adding to 425304251 its reverse (152403524), we get a palindrome (577707775).

The spelling of 425304251 in words is "four hundred twenty-five million, three hundred four thousand, two hundred fifty-one".