425909420551 has 2 divisors, whose sum is σ = 425909420552. Its totient is φ = 425909420550.

The previous prime is 425909420533. The next prime is 425909420561. The reversal of 425909420551 is 155024909524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425909420551 - 2³⁷ = 288470467079 is a prime.

It is a super-2 number, since 2×425909420551² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425909420561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212954710275 + 212954710276.

It is an arithmetic number, because the mean of its divisors is an integer number (212954710276).

Almost surely, 2^425909420551 is an apocalyptic number.

425909420551 is a deficient number, since it is larger than the sum of its proper divisors (1).

425909420551 is an equidigital number, since it uses as much as digits as its factorization.

425909420551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 425909420551 in words is "four hundred twenty-five billion, nine hundred nine million, four hundred twenty thousand, five hundred fifty-one".