1265306160 has 80 divisors (see below), whose sum is σ = 3926936160. Its totient is φ = 337029120.

The previous prime is 1265306113. The next prime is 1265306167. The reversal of 1265306160 is 616035621.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1265306167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252156 + ... + 257124.

It is an arithmetic number, because the mean of its divisors is an integer number (49086702).

Almost surely, 2^1265306160 is an apocalyptic number.

1265306160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1265306160 is an abundant number, since it is smaller than the sum of its proper divisors (2661630000).

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

1265306160 is a wasteful number, since it uses less digits than its factorization.

1265306160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046 (or 6040 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1265306160 is about 35571.1422363691. The cubic root of 1265306160 is about 1081.5963361555.

The spelling of 1265306160 in words is "one billion, two hundred sixty-five million, three hundred six thousand, one hundred sixty".