1263255451 has 8 divisors (see below), whose sum is σ = 1334480400. Its totient is φ = 1192504320.

The previous prime is 1263255449. The next prime is 1263255467. The reversal of 1263255451 is 1545523621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1263255451 - 2¹ = 1263255449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1263259451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112966 + ... + 123643.

It is an arithmetic number, because the mean of its divisors is an integer number (166810050).

Almost surely, 2^1263255451 is an apocalyptic number.

1263255451 is a deficient number, since it is larger than the sum of its proper divisors (71224949).

1263255451 is a wasteful number, since it uses less digits than its factorization.

1263255451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236909.

The product of its digits is 36000, while the sum is 34.

The square root of 1263255451 is about 35542.3050884435. The cubic root of 1263255451 is about 1081.0116980218.

The spelling of 1263255451 in words is "one billion, two hundred sixty-three million, two hundred fifty-five thousand, four hundred fifty-one".