256925696 has 56 divisors (see below), whose sum is σ = 521634720. Its totient is φ = 126517248.

The previous prime is 256925689. The next prime is 256925701. The reversal of 256925696 is 696529652.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646970 + ... + 647366.

Almost surely, 2^256925696 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 256925696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260817360).

256925696 is an abundant number, since it is smaller than the sum of its proper divisors (264709024).

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

256925696 is an frugal number, since it uses more digits than its factorization.

256925696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 478 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 50.

The square root of 256925696 is about 16028.9018962623. The cubic root of 256925696 is about 635.7248391080.

The spelling of 256925696 in words is "two hundred fifty-six million, nine hundred twenty-five thousand, six hundred ninety-six".