2725153209 has 9 divisors (see below), whose sum is σ = 3936558639.
Its totient is φ = 1816664400.
The previous prime is 2725153199. The next prime is 2725153219. The reversal of 2725153209 is 9023515272.
Multipling 2725153209 by its sum of digits (36), we get a square (98105515524 = 3132182).
The square root of 2725153209 is 52203.
It is a perfect power (a square), and thus also a powerful number.
2725153209 is a `hidden beast` number, since 2 + 72 + 51 + 532 + 0 + 9 = 666.
2725153209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (2725153199) and next prime (2725153219).
It can be written as a sum of positive squares in only one way, i.e., 1604242809 + 1120910400 = 40053^2 + 33480^2
It is a tau number, because it is divible by the number of its divisors (9).
It is not a de Polignac number, because 2725153209 - 29 = 2725152697 is a prime.
It is not an unprimeable number, because it can be changed into a prime (2725153219) 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, 147909 + ... + 165309.
Almost surely, 22725153209 is an apocalyptic number.
2725153209 is the 52203-rd square number.
2725153209 is the 26102-nd centered octagonal number.
It is an amenable number.
2725153209 is a deficient number, since it is larger than the sum of its proper divisors (1211405430).
2725153209 is an frugal number, since it uses more digits than its factorization.
2725153209 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 34808 (or 17404 counting only the distinct ones).
The product of its (nonzero) digits is 37800, while the sum is 36.
The cubic root of 2725153209 is about 1396.7873970617.
The spelling of 2725153209 in words is "two billion, seven hundred twenty-five million, one hundred fifty-three thousand, two hundred nine".