127345491025 has 27 divisors (see below), whose sum is σ = 159307892401. Its totient is φ = 100981400480.

The previous prime is 127345491023. The next prime is 127345491083. The reversal of 127345491025 is 520194543721.

The square root of 127345491025 is 356855.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 38006672209 + 89338818816 = 194953^2 + 298896^2 .

It is not a de Polignac number, because 127345491025 - 2¹ = 127345491023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127345491023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 265856736 + ... + 265857214.

Almost surely, 2^127345491025 is an apocalyptic number.

127345491025 is the 356855-th square number.

127345491025 is the 178428-th centered octagonal number.

It is an amenable number.

127345491025 is a deficient number, since it is larger than the sum of its proper divisors (31962401376).

127345491025 is an frugal number, since it uses more digits than its factorization.

127345491025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 127345491025 in words is "one hundred twenty-seven billion, three hundred forty-five million, four hundred ninety-one thousand, twenty-five".