256245542652 has 96 divisors (see below), whose sum is σ = 687031591680. Its totient is φ = 73516101120.

The previous prime is 256245542629. The next prime is 256245542687.

256245542652 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3973288 + ... + 4037264.

It is an arithmetic number, because the mean of its divisors is an integer number (7156579080).

Almost surely, 2^256245542652 is an apocalyptic number.

256245542652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256245542652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343515795840).

256245542652 is an abundant number, since it is smaller than the sum of its proper divisors (430786049028).

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

256245542652 is a wasteful number, since it uses less digits than its factorization.

256245542652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65611 (or 65609 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 48.

It can be divided in two parts, 256245 and 542652, that added together give a palindrome (798897).

The spelling of 256245542652 in words is "two hundred fifty-six billion, two hundred forty-five million, five hundred forty-two thousand, six hundred fifty-two".