1265255537952 has 96 divisors (see below), whose sum is σ = 3796543263744. Its totient is φ = 361427616000.

The previous prime is 1265255537941. The next prime is 1265255537983. The reversal of 1265255537952 is 2597355525621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 1265255537892 and 1265255537901.

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 15 ways as a sum of consecutive naturals, for example, 3136927 + ... + 3517217.

It is an arithmetic number, because the mean of its divisors is an integer number (39547325664).

Almost surely, 2^{1265255537952} is an apocalyptic number.

1265255537952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1265255537952 is an abundant number, since it is smaller than the sum of its proper divisors (2531287725792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265255537952 is a wasteful number, since it uses less digits than its factorization.

1265255537952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385262 (or 385254 counting only the distinct ones).

The product of its digits is 28350000, while the sum is 57.

The spelling of 1265255537952 in words is "one trillion, two hundred sixty-five billion, two hundred fifty-five million, five hundred thirty-seven thousand, nine hundred fifty-two".