1256053642355 has 8 divisors (see below), whose sum is σ = 1507295893200. Its totient is φ = 1004821898976.

The previous prime is 1256053642301. The next prime is 1256053642369. The reversal of 1256053642355 is 5532463506521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1256053642355 - 2⁸ = 1256053642099 is a prime.

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, 2361440 + ... + 2844029.

It is an arithmetic number, because the mean of its divisors is an integer number (188411986650).

Almost surely, 2^{1256053642355} is an apocalyptic number.

1256053642355 is a deficient number, since it is larger than the sum of its proper divisors (251242250845).

1256053642355 is an equidigital number, since it uses as much as digits as its factorization.

1256053642355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253733.

The product of its (nonzero) digits is 3240000, while the sum is 47.

The spelling of 1256053642355 in words is "one trillion, two hundred fifty-six billion, fifty-three million, six hundred forty-two thousand, three hundred fifty-five".