1263025503656 has 64 divisors (see below), whose sum is σ = 2726725075200. Its totient is φ = 537257889792.

The previous prime is 1263025503653. The next prime is 1263025503689. The reversal of 1263025503656 is 6563055203621.

It is not an unprimeable number, because it can be changed into a prime (1263025503653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6231560 + ... + 6431048.

It is an arithmetic number, because the mean of its divisors is an integer number (42605079300).

Almost surely, 2^{1263025503656} is an apocalyptic number.

It is an amenable number.

1263025503656 is an abundant number, since it is smaller than the sum of its proper divisors (1463699571544).

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

1263025503656 is a wasteful number, since it uses less digits than its factorization.

1263025503656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200346 (or 200342 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 44.

The spelling of 1263025503656 in words is "one trillion, two hundred sixty-three billion, twenty-five million, five hundred three thousand, six hundred fifty-six".