54691867206025 has 27 divisors (see below), whose sum is σ = 78890601406869. Its totient is φ = 37502817166080.

The previous prime is 54691867206017. The next prime is 54691867206127. The reversal of 54691867206025 is 52060276819645.

The square root of 54691867206025 is 7395395.

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 780853228281 + 53911013977744 = 883659^2 + 7342412^2 .

It is not a de Polignac number, because 54691867206025 - 2³ = 54691867206017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 258733177 + ... + 258944473.

Almost surely, 2^{54691867206025} is an apocalyptic number.

54691867206025 is the 7395395-th square number.

54691867206025 is the 3697698-th centered octagonal number.

It is an amenable number.

54691867206025 is a deficient number, since it is larger than the sum of its proper divisors (24198734200844).

54691867206025 is an frugal number, since it uses more digits than its factorization.

54691867206025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422618 (or 211309 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 54691867206025 in words is "fifty-four trillion, six hundred ninety-one billion, eight hundred sixty-seven million, two hundred six thousand, twenty-five".