425515424515481 has 2 divisors, whose sum is σ = 425515424515482. Its totient is φ = 425515424515480.

The previous prime is 425515424515477. The next prime is 425515424515543. The reversal of 425515424515481 is 184515424515524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373890912115081 + 51624512400400 = 19336259^2 + 7185020^2 .

It is a cyclic number.

It is not a de Polignac number, because 425515424515481 - 2² = 425515424515477 is a prime.

It is a super-2 number, since 2×425515424515481² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (425515424515081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212757712257740 + 212757712257741.

It is an arithmetic number, because the mean of its divisors is an integer number (212757712257741).

Almost surely, 2^{425515424515481} is an apocalyptic number.

It is an amenable number.

425515424515481 is a deficient number, since it is larger than the sum of its proper divisors (1).

425515424515481 is an equidigital number, since it uses as much as digits as its factorization.

425515424515481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25600000, while the sum is 56.

The spelling of 425515424515481 in words is "four hundred twenty-five trillion, five hundred fifteen billion, four hundred twenty-four million, five hundred fifteen thousand, four hundred eighty-one".