425651251 has 2 divisors, whose sum is σ = 425651252. Its totient is φ = 425651250.

The previous prime is 425651227. The next prime is 425651267. The reversal of 425651251 is 152156524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425651251 - 2⁷ = 425651123 is a prime.

It is not a weakly prime, because it can be changed into another prime (425651651) 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, 212825625 + 212825626.

It is an arithmetic number, because the mean of its divisors is an integer number (212825626).

Almost surely, 2^425651251 is an apocalyptic number.

425651251 is a deficient number, since it is larger than the sum of its proper divisors (1).

425651251 is an equidigital number, since it uses as much as digits as its factorization.

425651251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 31.

The square root of 425651251 is about 20631.3172386060. The cubic root of 425651251 is about 752.2311345072.

The spelling of 425651251 in words is "four hundred twenty-five million, six hundred fifty-one thousand, two hundred fifty-one".