1263252415 has 4 divisors (see below), whose sum is σ = 1515902904. Its totient is φ = 1010601928.

The previous prime is 1263252413. The next prime is 1263252427. The reversal of 1263252415 is 5142523621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1263252415 - 2¹ = 1263252413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263252413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126325237 + ... + 126325246.

It is an arithmetic number, because the mean of its divisors is an integer number (378975726).

Almost surely, 2^1263252415 is an apocalyptic number.

1263252415 is a deficient number, since it is larger than the sum of its proper divisors (252650489).

1263252415 is an equidigital number, since it uses as much as digits as its factorization.

1263252415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252650488.

The product of its digits is 14400, while the sum is 31.

The square root of 1263252415 is about 35542.2623787513. The cubic root of 1263252415 is about 1081.0108320175.

The spelling of 1263252415 in words is "one billion, two hundred sixty-three million, two hundred fifty-two thousand, four hundred fifteen".