1265382623 has 2 divisors, whose sum is σ = 1265382624. Its totient is φ = 1265382622.

The previous prime is 1265382589. The next prime is 1265382659. The reversal of 1265382623 is 3262835621.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3262835621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1265382623 - 2¹⁰ = 1265381599 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265382823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632691311 + 632691312.

It is an arithmetic number, because the mean of its divisors is an integer number (632691312).

Almost surely, 2^1265382623 is an apocalyptic number.

1265382623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265382623 is an equidigital number, since it uses as much as digits as its factorization.

1265382623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

The square root of 1265382623 is about 35572.2170099082. The cubic root of 1265382623 is about 1081.6181228285.

The spelling of 1265382623 in words is "one billion, two hundred sixty-five million, three hundred eighty-two thousand, six hundred twenty-three".