1687252462625 has 32 divisors (see below), whose sum is σ = 2153168637984. Its totient is φ = 1319551584000.

The previous prime is 1687252462579. The next prime is 1687252462631. The reversal of 1687252462625 is 5262642527861.

It can be written as a sum of positive squares in 16 ways, for example, as 800106993169 + 887145469456 = 894487^2 + 941884^2 .

It is not a de Polignac number, because 1687252462625 - 2²⁶ = 1687185353761 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1375415 + ... + 2294835.

It is an arithmetic number, because the mean of its divisors is an integer number (67286519937).

Almost surely, 2^{1687252462625} is an apocalyptic number.

It is an amenable number.

1687252462625 is a deficient number, since it is larger than the sum of its proper divisors (465916175359).

1687252462625 is an equidigital number, since it uses as much as digits as its factorization.

1687252462625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919766 (or 919756 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 56.

The spelling of 1687252462625 in words is "one trillion, six hundred eighty-seven billion, two hundred fifty-two million, four hundred sixty-two thousand, six hundred twenty-five".