1256224016 has 40 divisors (see below), whose sum is σ = 2525713344. Its totient is φ = 604840320.

The previous prime is 1256223989. The next prime is 1256224031. The reversal of 1256224016 is 6104226521.

It is a self number, because there is not a number n which added to its sum of digits gives 1256224016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35990 + ... + 61706.

Almost surely, 2^1256224016 is an apocalyptic number.

1256224016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1256224016 is an abundant number, since it is smaller than the sum of its proper divisors (1269489328).

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

1256224016 is a wasteful number, since it uses less digits than its factorization.

1256224016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25839 (or 25833 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1256224016 is about 35443.2506409895. The cubic root of 1256224016 is about 1079.0022838866.

The spelling of 1256224016 in words is "one billion, two hundred fifty-six million, two hundred twenty-four thousand, sixteen".