1256252384 has 12 divisors (see below), whose sum is σ = 2473246944. Its totient is φ = 628126176.

The previous prime is 1256252381. The next prime is 1256252407. The reversal of 1256252384 is 4832526521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256252381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19628912 + ... + 19628975.

It is an arithmetic number, because the mean of its divisors is an integer number (206103912).

Almost surely, 2^1256252384 is an apocalyptic number.

It is an amenable number.

1256252384 is a deficient number, since it is larger than the sum of its proper divisors (1216994560).

1256252384 is an equidigital number, since it uses as much as digits as its factorization.

1256252384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39257897 (or 39257889 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 1256252384 is about 35443.6508277576. The cubic root of 1256252384 is about 1079.0104058208.

It can be divided in two parts, 12562 and 52384, that added together give a palindrome (64946).

The spelling of 1256252384 in words is "one billion, two hundred fifty-six million, two hundred fifty-two thousand, three hundred eighty-four".