1265534434 has 32 divisors (see below), whose sum is σ = 2028571776. Its totient is φ = 590065920.

The previous prime is 1265534423. The next prime is 1265534467. The reversal of 1265534434 is 4344355621.

It is a junction number, because it is equal to n+sod(n) for n = 1265534393 and 1265534402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2744964 + ... + 2745424.

It is an arithmetic number, because the mean of its divisors is an integer number (63392868).

Almost surely, 2^1265534434 is an apocalyptic number.

1265534434 is a deficient number, since it is larger than the sum of its proper divisors (763037342).

1265534434 is a wasteful number, since it uses less digits than its factorization.

1265534434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050.

The product of its digits is 172800, while the sum is 37.

The square root of 1265534434 is about 35574.3507881732. The cubic root of 1265534434 is about 1081.6613758757.

It can be divided in two parts, 12655 and 34434, that added together give a square (47089 = 217²).

The spelling of 1265534434 in words is "one billion, two hundred sixty-five million, five hundred thirty-four thousand, four hundred thirty-four".