1257631483745 has 64 divisors (see below), whose sum is σ = 1861404862464. Its totient is φ = 794336025600.

The previous prime is 1257631483739. The next prime is 1257631483751. The reversal of 1257631483745 is 5473841367521.

It is an interprime number because it is at equal distance from previous prime (1257631483739) and next prime (1257631483751).

It is not a de Polignac number, because 1257631483745 - 2²⁰ = 1257630435169 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 842351219 + ... + 842352711.

It is an arithmetic number, because the mean of its divisors is an integer number (29084450976).

Almost surely, 2^{1257631483745} is an apocalyptic number.

1257631483745 is the 647465-th octagonal number.

It is an amenable number.

1257631483745 is a deficient number, since it is larger than the sum of its proper divisors (603773378719).

1257631483745 is a wasteful number, since it uses less digits than its factorization.

1257631483745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4242.

The product of its digits is 16934400, while the sum is 56.

The spelling of 1257631483745 in words is "one trillion, two hundred fifty-seven billion, six hundred thirty-one million, four hundred eighty-three thousand, seven hundred forty-five".