1265151497 has 2 divisors, whose sum is σ = 1265151498. Its totient is φ = 1265151496.

The previous prime is 1265151479. The next prime is 1265151523. The reversal of 1265151497 is 7941515621.

It is a happy number.

Together with previous prime (1265151479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1228923136 + 36228361 = 35056^2 + 6019^2 .

It is a cyclic number.

It is not a de Polignac number, because 1265151497 - 2²² = 1260957193 is a prime.

It is a super-2 number, since 2×1265151497² = 3201216620722682018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1265151427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632575748 + 632575749.

It is an arithmetic number, because the mean of its divisors is an integer number (632575749).

Almost surely, 2^1265151497 is an apocalyptic number.

It is an amenable number.

1265151497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265151497 is an equidigital number, since it uses as much as digits as its factorization.

1265151497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 41.

The square root of 1265151497 is about 35568.9681745198. The cubic root of 1265151497 is about 1081.5522652010.

The spelling of 1265151497 in words is "one billion, two hundred sixty-five million, one hundred fifty-one thousand, four hundred ninety-seven".