2439866025 has 81 divisors (see below), whose sum is σ = 4542405231. Its totient is φ = 1251866880.

The previous prime is 2439865997. The next prime is 2439866029. The reversal of 2439866025 is 5206689342.

The square root of 2439866025 is 49395.

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

2439866025 is a `hidden beast` number, since 2 + 4 + 39 + 8 + 6 + 602 + 5 = 666.

2439866025 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 13 ways, for example, as 1265296041 + 1174569984 = 35571^2 + 34272^2 .

It is not a de Polignac number, because 2439866025 - 2¹⁷ = 2439734953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2439866029) 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, 27414181 + ... + 27414269.

Almost surely, 2^2439866025 is an apocalyptic number.

2439866025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2439866025 is the 49395-th square number.

2439866025 is the 24698-th centered octagonal number.

It is an amenable number.

2439866025 is a deficient number, since it is larger than the sum of its proper divisors (2102539206).

2439866025 is an equidigital number, since it uses as much as digits as its factorization.

2439866025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The cubic root of 2439866025 is about 1346.2384588929.

The spelling of 2439866025 in words is "two billion, four hundred thirty-nine million, eight hundred sixty-six thousand, twenty-five".