1265056454 has 4 divisors (see below), whose sum is σ = 1897584684. Its totient is φ = 632528226.

The previous prime is 1265056453. The next prime is 1265056469. The reversal of 1265056454 is 4546505621.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265056451) 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, 316264112 + ... + 316264115.

It is an arithmetic number, because the mean of its divisors is an integer number (474396171).

Almost surely, 2^1265056454 is an apocalyptic number.

1265056454 is a deficient number, since it is larger than the sum of its proper divisors (632528230).

1265056454 is an equidigital number, since it uses as much as digits as its factorization.

1265056454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632528229.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 1265056454 is about 35567.6321112328. The cubic root of 1265056454 is about 1081.5251810807.

The spelling of 1265056454 in words is "one billion, two hundred sixty-five million, fifty-six thousand, four hundred fifty-four".