18035147025 has 81 divisors (see below), whose sum is σ = 37606306491. Its totient is φ = 8238192480.

The previous prime is 18035146993. The next prime is 18035147027. The reversal of 18035147025 is 52074153081.

The square root of 18035147025 is 134295.

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

18035147025 is a `hidden beast` number, since 180 + 3 + 5 + 1 + 470 + 2 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6492652929 + 11542494096 = 80577^2 + 107436^2 .

It is not a de Polignac number, because 18035147025 - 2⁵ = 18035146993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18035147027) 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, 14100336 + ... + 14101614.

Almost surely, 2^18035147025 is an apocalyptic number.

18035147025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18035147025 is the 134295-th square number.

18035147025 is the 67148-th centered octagonal number.

It is an amenable number.

18035147025 is an abundant number, since it is smaller than the sum of its proper divisors (19571159466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18035147025 is an equidigital number, since it uses as much as digits as its factorization.

18035147025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

Multiplying 18035147025 by its sum of digits (36), we get a square (649265292900 = 805770²).

The spelling of 18035147025 in words is "eighteen billion, thirty-five million, one hundred forty-seven thousand, twenty-five".