89194809025 has 135 divisors (see below), whose sum is σ = 137474225609. Its totient is φ = 57399101760.

The previous prime is 89194808921. The next prime is 89194809029. The reversal of 89194809025 is 52090849198.

The square root of 89194809025 is 298655.

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 671898241 + 88522910784 = 25921^2 + 297528^2 .

It is not a de Polignac number, because 89194809025 - 2⁷ = 89194808897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89194809029) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 1682920899 + ... + 1682920951.

Almost surely, 2^89194809025 is an apocalyptic number.

89194809025 is the 298655-th square number.

89194809025 is the 149328-th centered octagonal number.

It is an amenable number.

89194809025 is a deficient number, since it is larger than the sum of its proper divisors (48279416584).

89194809025 is an frugal number, since it uses more digits than its factorization.

89194809025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 55.

The spelling of 89194809025 in words is "eighty-nine billion, one hundred ninety-four million, eight hundred nine thousand, twenty-five".