425615223527161 has 2 divisors, whose sum is σ = 425615223527162. Its totient is φ = 425615223527160.

The previous prime is 425615223527147. The next prime is 425615223527209. The reversal of 425615223527161 is 161725322516524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417572100645561 + 8043122881600 = 20434581^2 + 2836040^2 .

It is a cyclic number.

It is not a de Polignac number, because 425615223527161 - 2¹⁷ = 425615223396089 is a prime.

It is a super-2 number, since 2×425615223527161² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 425615223527099 and 425615223527108.

It is not a weakly prime, because it can be changed into another prime (425615223567161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212807611763580 + 212807611763581.

It is an arithmetic number, because the mean of its divisors is an integer number (212807611763581).

Almost surely, 2^{425615223527161} is an apocalyptic number.

It is an amenable number.

425615223527161 is a deficient number, since it is larger than the sum of its proper divisors (1).

425615223527161 is an equidigital number, since it uses as much as digits as its factorization.

425615223527161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048000, while the sum is 52.

The spelling of 425615223527161 in words is "four hundred twenty-five trillion, six hundred fifteen billion, two hundred twenty-three million, five hundred twenty-seven thousand, one hundred sixty-one".