1525371317 has 2 divisors, whose sum is σ = 1525371318. Its totient is φ = 1525371316.

The previous prime is 1525371301. The next prime is 1525371343. The reversal of 1525371317 is 7131735251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 867243601 + 658127716 = 29449^2 + 25654^2 .

It is a cyclic number.

It is not a de Polignac number, because 1525371317 - 2⁴ = 1525371301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1525371517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 762685658 + 762685659.

It is an arithmetic number, because the mean of its divisors is an integer number (762685659).

Almost surely, 2^1525371317 is an apocalyptic number.

It is an amenable number.

1525371317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1525371317 is an equidigital number, since it uses as much as digits as its factorization.

1525371317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22050, while the sum is 35.

The square root of 1525371317 is about 39056.0023171855. The cubic root of 1525371317 is about 1151.1321722220.

The spelling of 1525371317 in words is "one billion, five hundred twenty-five million, three hundred seventy-one thousand, three hundred seventeen".