1257825678456 has 32 divisors (see below), whose sum is σ = 3144759074640. Its totient is φ = 419249242368.

The previous prime is 1257825678401. The next prime is 1257825678469. The reversal of 1257825678456 is 6548765287521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1226671 + ... + 2005086.

Almost surely, 2^{1257825678456} is an apocalyptic number.

It is an amenable number.

1257825678456 is an abundant number, since it is smaller than the sum of its proper divisors (1886933396184).

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

1257825678456 is a wasteful number, since it uses less digits than its factorization.

1257825678456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247983 (or 3247979 counting only the distinct ones).

The product of its digits is 225792000, while the sum is 66.

The spelling of 1257825678456 in words is "one trillion, two hundred fifty-seven billion, eight hundred twenty-five million, six hundred seventy-eight thousand, four hundred fifty-six".