425720423251 has 2 divisors, whose sum is σ = 425720423252. Its totient is φ = 425720423250.

The previous prime is 425720423221. The next prime is 425720423281. The reversal of 425720423251 is 152324027524.

It is a balanced prime because it is at equal distance from previous prime (425720423221) and next prime (425720423281).

It is a cyclic number.

It is not a de Polignac number, because 425720423251 - 2⁹ = 425720422739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425720423251.

It is not a weakly prime, because it can be changed into another prime (425720423221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212860211625 + 212860211626.

It is an arithmetic number, because the mean of its divisors is an integer number (212860211626).

Almost surely, 2^425720423251 is an apocalyptic number.

425720423251 is a deficient number, since it is larger than the sum of its proper divisors (1).

425720423251 is an equidigital number, since it uses as much as digits as its factorization.

425720423251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 37.

The spelling of 425720423251 in words is "four hundred twenty-five billion, seven hundred twenty million, four hundred twenty-three thousand, two hundred fifty-one".