201802054547025 has 81 divisors (see below), whose sum is σ = 362564332743249. Its totient is φ = 107296939967040.

The previous prime is 201802054546973. The next prime is 201802054547029. The reversal of 201802054547025 is 520745450208102.

The square root of 201802054547025 is 14205705.

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

201802054547025 is a `hidden beast` number, since 2 + 0 + 1 + 80 + 2 + 0 + 5 + 4 + 547 + 0 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1942987875921 + 199859066671104 = 1393911^2 + 14137152^2 .

It is not a de Polignac number, because 201802054547025 - 2²³ = 201802046158417 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (201802054547029) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 79480918206 + ... + 79480920744.

Almost surely, 2^{201802054547025} is an apocalyptic number.

201802054547025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

201802054547025 is the 14205705-th square number.

201802054547025 is the 7102853-rd centered octagonal number.

It is an amenable number.

201802054547025 is a deficient number, since it is larger than the sum of its proper divisors (160762278196224).

201802054547025 is an frugal number, since it uses more digits than its factorization.

201802054547025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5840 (or 2920 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 45.

The spelling of 201802054547025 in words is "two hundred one trillion, eight hundred two billion, fifty-four million, five hundred forty-seven thousand, twenty-five".