1255601497 has 2 divisors, whose sum is σ = 1255601498. Its totient is φ = 1255601496.

The previous prime is 1255601471. The next prime is 1255601527. The reversal of 1255601497 is 7941065521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1209578841 + 46022656 = 34779^2 + 6784^2 .

It is an emirp because it is prime and its reverse (7941065521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255601497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1255601437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627800748 + 627800749.

It is an arithmetic number, because the mean of its divisors is an integer number (627800749).

Almost surely, 2^1255601497 is an apocalyptic number.

It is an amenable number.

1255601497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255601497 is an equidigital number, since it uses as much as digits as its factorization.

1255601497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 1255601497 is about 35434.4676409848. The cubic root of 1255601497 is about 1078.8240220485.

The spelling of 1255601497 in words is "one billion, two hundred fifty-five million, six hundred one thousand, four hundred ninety-seven".