1252547064 has 160 divisors (see below), whose sum is σ = 3780311040. Its totient is φ = 386337600.

The previous prime is 1252547047. The next prime is 1252547071. The reversal of 1252547064 is 4607452521.

It is a happy number.

1252547064 is a `hidden beast` number, since 1 + 2 + 52 + 547 + 0 + 64 = 666.

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 39 ways as a sum of consecutive naturals, for example, 460669 + ... + 463379.

It is an arithmetic number, because the mean of its divisors is an integer number (23626944).

Almost surely, 2^1252547064 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 1252547064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1890155520).

1252547064 is an abundant number, since it is smaller than the sum of its proper divisors (2527763976).

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

1252547064 is a wasteful number, since it uses less digits than its factorization.

1252547064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783 (or 2770 counting only the distinct ones).

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

The square root of 1252547064 is about 35391.3416530089. The cubic root of 1252547064 is about 1077.9485130240.

Adding to 1252547064 its reverse (4607452521), we get a palindrome (5859999585).

The spelling of 1252547064 in words is "one billion, two hundred fifty-two million, five hundred forty-seven thousand, sixty-four".