84765411025 has 9 divisors (see below), whose sum is σ = 105110914801. Its totient is φ = 67811164240.

The previous prime is 84765411023. The next prime is 84765411127. The reversal of 84765411025 is 52011456748.

The square root of 84765411025 is 291145.

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 70442449 + 84694968576 = 8393^2 + 291024^2 .

It is not a de Polignac number, because 84765411025 - 2¹ = 84765411023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84765411023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1426611 + ... + 1484839.

Almost surely, 2^84765411025 is an apocalyptic number.

84765411025 is the 291145-th square number.

84765411025 is the 145573-rd centered octagonal number.

It is an amenable number.

84765411025 is a deficient number, since it is larger than the sum of its proper divisors (20345503776).

84765411025 is an frugal number, since it uses more digits than its factorization.

84765411025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116468 (or 58234 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 84765411025 in words is "eighty-four billion, seven hundred sixty-five million, four hundred eleven thousand, twenty-five".