2563398256 has 10 divisors (see below), whose sum is σ = 4966584152. Its totient is φ = 1281699120.

The previous prime is 2563398239. The next prime is 2563398287. The reversal of 2563398256 is 6528933652.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80106180 + ... + 80106211.

Almost surely, 2^2563398256 is an apocalyptic number.

It is an amenable number.

2563398256 is a deficient number, since it is larger than the sum of its proper divisors (2403185896).

2563398256 is a wasteful number, since it uses less digits than its factorization.

2563398256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160212399 (or 160212393 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 49.

The square root of 2563398256 is about 50630.0133912682. The cubic root of 2563398256 is about 1368.5857955377.

The spelling of 2563398256 in words is "two billion, five hundred sixty-three million, three hundred ninety-eight thousand, two hundred fifty-six".