1957227378625 has 8 divisors (see below), whose sum is σ = 2442619768680. Its totient is φ = 1565781902800.

The previous prime is 1957227378593. The next prime is 1957227378683. The reversal of 1957227378625 is 5268737227591.

It can be written as a sum of positive squares in 4 ways, for example, as 15186609 + 1957212192016 = 3897^2 + 1399004^2 .

It is not a de Polignac number, because 1957227378625 - 2⁵ = 1957227378593 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, 7828909390 + ... + 7828909639.

It is an arithmetic number, because the mean of its divisors is an integer number (305327471085).

Almost surely, 2^{1957227378625} is an apocalyptic number.

It is an amenable number.

1957227378625 is a deficient number, since it is larger than the sum of its proper divisors (485392390055).

1957227378625 is an equidigital number, since it uses as much as digits as its factorization.

1957227378625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15657819044 (or 15657819034 counting only the distinct ones).

The product of its digits is 88905600, while the sum is 64.

The spelling of 1957227378625 in words is "one trillion, nine hundred fifty-seven billion, two hundred twenty-seven million, three hundred seventy-eight thousand, six hundred twenty-five".