125317481 has 2 divisors, whose sum is σ = 125317482. Its totient is φ = 125317480.

The previous prime is 125317477. The next prime is 125317519. The reversal of 125317481 is 184713521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105247081 + 20070400 = 10259^2 + 4480^2 .

It is an emirp because it is prime and its reverse (184713521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125317481 - 2² = 125317477 is a prime.

It is a super-2 number, since 2×125317481² = 31408942088370722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (125317441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62658740 + 62658741.

It is an arithmetic number, because the mean of its divisors is an integer number (62658741).

Almost surely, 2^125317481 is an apocalyptic number.

It is an amenable number.

125317481 is a deficient number, since it is larger than the sum of its proper divisors (1).

125317481 is an equidigital number, since it uses as much as digits as its factorization.

125317481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 32.

The square root of 125317481 is about 11194.5290655748. The cubic root of 125317481 is about 500.4229501255.

The spelling of 125317481 in words is "one hundred twenty-five million, three hundred seventeen thousand, four hundred eighty-one".