1525317161 has 2 divisors, whose sum is σ = 1525317162. Its totient is φ = 1525317160.

The previous prime is 1525317133. The next prime is 1525317173. The reversal of 1525317161 is 1617135251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1426195225 + 99121936 = 37765^2 + 9956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1525317161 - 2⁶ = 1525317097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1525317121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 762658580 + 762658581.

It is an arithmetic number, because the mean of its divisors is an integer number (762658581).

Almost surely, 2^1525317161 is an apocalyptic number.

It is an amenable number.

1525317161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1525317161 is an equidigital number, since it uses as much as digits as its factorization.

1525317161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 32.

The square root of 1525317161 is about 39055.3089989056. The cubic root of 1525317161 is about 1151.1185489922.

The spelling of 1525317161 in words is "one billion, five hundred twenty-five million, three hundred seventeen thousand, one hundred sixty-one".