1265354137 has 2 divisors, whose sum is σ = 1265354138. Its totient is φ = 1265354136.

The previous prime is 1265354117. The next prime is 1265354141. The reversal of 1265354137 is 7314535621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1012257856 + 253096281 = 31816^2 + 15909^2 .

It is a cyclic number.

It is not a de Polignac number, because 1265354137 - 2¹⁹ = 1264829849 is a prime.

It is a super-2 number, since 2×1265354137² = 3202242184046029538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1265354096 and 1265354105.

It is not a weakly prime, because it can be changed into another prime (1265354107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632677068 + 632677069.

It is an arithmetic number, because the mean of its divisors is an integer number (632677069).

Almost surely, 2^1265354137 is an apocalyptic number.

It is an amenable number.

1265354137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265354137 is an equidigital number, since it uses as much as digits as its factorization.

1265354137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 37.

The square root of 1265354137 is about 35571.8166109070. The cubic root of 1265354137 is about 1081.6100063889.

Adding to 1265354137 its reverse (7314535621), we get a palindrome (8579889758).

The spelling of 1265354137 in words is "one billion, two hundred sixty-five million, three hundred fifty-four thousand, one hundred thirty-seven".