57217802420025 has 81 divisors (see below), whose sum is σ = 110976055103277. Its totient is φ = 28168038100800.

The previous prime is 57217802419901. The next prime is 57217802420033. The reversal of 57217802420025 is 52002420871275.

The square root of 57217802420025 is 7564245.

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

57217802420025 is a `hidden beast` number, since 5 + 7 + 217 + 8 + 0 + 2 + 420 + 0 + 2 + 5 = 666.

57217802420025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14747973215481 + 42469829204544 = 3840309^2 + 6516888^2 .

It is a de Polignac number, because none of the positive numbers 2^k-57217802420025 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1475008380 + ... + 1475047170.

Almost surely, 2^{57217802420025} is an apocalyptic number.

57217802420025 is the 7564245-th square number.

57217802420025 is the 3782123-rd centered octagonal number.

It is an amenable number.

57217802420025 is a deficient number, since it is larger than the sum of its proper divisors (53758252683252).

57217802420025 is an frugal number, since it uses more digits than its factorization.

57217802420025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77624 (or 38812 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The spelling of 57217802420025 in words is "fifty-seven trillion, two hundred seventeen billion, eight hundred two million, four hundred twenty thousand, twenty-five".