90814836025 has 9 divisors (see below), whose sum is σ = 112612265103. Its totient is φ = 72650663400.

The previous prime is 90814835953. The next prime is 90814836029. The reversal of 90814836025 is 52063841809.

The square root of 90814836025 is 301355.

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

It can be written as a sum of positive squares in only one way, i.e., 32693340969 + 58121495056 = 180813^2 + 241084^2 .

It is not a de Polignac number, because 90814836025 - 2¹³ = 90814827833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90814836029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1476640 + ... + 1536910.

Almost surely, 2^90814836025 is an apocalyptic number.

90814836025 is the 301355-th square number.

90814836025 is the 150678-th centered octagonal number.

It is an amenable number.

90814836025 is a deficient number, since it is larger than the sum of its proper divisors (21797429078).

90814836025 is an frugal number, since it uses more digits than its factorization.

90814836025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120552 (or 60276 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 90814836025 in words is "ninety billion, eight hundred fourteen million, eight hundred thirty-six thousand, twenty-five".