1265454955 has 32 divisors (see below), whose sum is σ = 1610642880. Its totient is φ = 953272320.

The previous prime is 1265454907. The next prime is 1265454973. The reversal of 1265454955 is 5594545621.

It is not a de Polignac number, because 1265454955 - 2²⁷ = 1131237227 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 783729 + ... + 785341.

It is an arithmetic number, because the mean of its divisors is an integer number (50332590).

Almost surely, 2^1265454955 is an apocalyptic number.

1265454955 is a deficient number, since it is larger than the sum of its proper divisors (345187925).

1265454955 is a wasteful number, since it uses less digits than its factorization.

1265454955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791.

The product of its digits is 1080000, while the sum is 46.

The square root of 1265454955 is about 35573.2336877040. The cubic root of 1265454955 is about 1081.6387316441.

The spelling of 1265454955 in words is "one billion, two hundred sixty-five million, four hundred fifty-four thousand, nine hundred fifty-five".