1252715256 has 48 divisors (see below), whose sum is σ = 3653755560. Its totient is φ = 385450560.

The previous prime is 1252715249. The next prime is 1252715257. The reversal of 1252715256 is 6525172521.

1252715256 is a `hidden beast` number, since 12 + 52 + 71 + 525 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1252715256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252715257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 668250 + ... + 670121.

Almost surely, 2^1252715256 is an apocalyptic number.

It is an amenable number.

1252715256 is an abundant number, since it is smaller than the sum of its proper divisors (2401040304).

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

1252715256 is a wasteful number, since it uses less digits than its factorization.

1252715256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338396 (or 1338389 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 1252715256 is about 35393.7177476456. The cubic root of 1252715256 is about 1077.9967598344.

Adding to 1252715256 its reverse (6525172521), we get a palindrome (7777887777).

The spelling of 1252715256 in words is "one billion, two hundred fifty-two million, seven hundred fifteen thousand, two hundred fifty-six".