161525482441 has 2 divisors, whose sum is σ = 161525482442. Its totient is φ = 161525482440.

The previous prime is 161525482399. The next prime is 161525482451. The reversal of 161525482441 is 144284525161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156768483600 + 4756998841 = 395940^2 + 68971^2 .

It is a cyclic number.

It is not a de Polignac number, because 161525482441 - 2¹³ = 161525474249 is a prime.

It is not a weakly prime, because it can be changed into another prime (161525482451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80762741220 + 80762741221.

It is an arithmetic number, because the mean of its divisors is an integer number (80762741221).

Almost surely, 2^161525482441 is an apocalyptic number.

It is an amenable number.

161525482441 is a deficient number, since it is larger than the sum of its proper divisors (1).

161525482441 is an equidigital number, since it uses as much as digits as its factorization.

161525482441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 307200, while the sum is 43.

The spelling of 161525482441 in words is "one hundred sixty-one billion, five hundred twenty-five million, four hundred eighty-two thousand, four hundred forty-one".