1275452064 has 144 divisors (see below), whose sum is σ = 4042846080. Its totient is φ = 379054080.

The previous prime is 1275452041. The next prime is 1275452071. The reversal of 1275452064 is 4602545721.

It is a happy number.

1275452064 is a `hidden beast` number, since 1 + 2 + 75 + 4 + 520 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86169 + ... + 99879.

It is an arithmetic number, because the mean of its divisors is an integer number (28075320).

Almost surely, 2^1275452064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275452064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2021423040).

1275452064 is an abundant number, since it is smaller than the sum of its proper divisors (2767394016).

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

1275452064 is a wasteful number, since it uses less digits than its factorization.

1275452064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13763 (or 13752 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 1275452064 is about 35713.4717438672. The cubic root of 1275452064 is about 1084.4795833643.

Adding to 1275452064 its reverse (4602545721), we get a palindrome (5877997785).

The spelling of 1275452064 in words is "one billion, two hundred seventy-five million, four hundred fifty-two thousand, sixty-four".