1557425263808 has 28 divisors (see below), whose sum is σ = 3148827382800. Its totient is φ = 764019939072.

The previous prime is 1557425263777. The next prime is 1557425263819. The reversal of 1557425263808 is 8083625247551.

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, 229569908 + ... + 229576691.

Almost surely, 2^{1557425263808} is an apocalyptic number.

It is an amenable number.

1557425263808 is an abundant number, since it is smaller than the sum of its proper divisors (1591402118992).

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

1557425263808 is an equidigital number, since it uses as much as digits as its factorization.

1557425263808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459146664 (or 459146654 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 56.

The spelling of 1557425263808 in words is "one trillion, five hundred fifty-seven billion, four hundred twenty-five million, two hundred sixty-three thousand, eight hundred eight".