52490025 has 135 divisors (see below), whose sum is σ = 118235271.
Its totient is φ = 22952160.
The previous prime is 52489909. The next prime is 52490051. The reversal of 52490025 is 52009425.
The square root of 52490025 is 7245.
It is a perfect power (a square), and thus also a powerful number.
52490025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in only one way, i.e., 18896409 + 33593616 = 4347^2 + 5796^2
It is a tau number, because it is divible by the number of its divisors (135).
It is not a de Polignac number, because 52490025 - 211 = 52487977 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 2282164 + ... + 2282186.
Almost surely, 252490025 is an apocalyptic number.
52490025 is the 7245-th square number.
52490025 is the 3623-rd centered octagonal number.
It is an amenable number.
52490025 is an abundant number, since it is smaller than the sum of its proper divisors (65745246).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
52490025 is a wasteful number, since it uses less digits than its factorization.
52490025 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 82 (or 38 counting only the distinct ones).
The product of its (nonzero) digits is 3600, while the sum is 27.
The cubic root of 52490025 is about 374.4199030963.
Multiplying 52490025 by its product of nonzero digits (3600), we get a square (188964090000 = 4347002).
The spelling of 52490025 in words is "fifty-two million, four hundred ninety thousand, twenty-five".