5439800025 has 135 divisors (see below), whose sum is σ = 11150533933. Its totient is φ = 2619777600.

The previous prime is 5439799993. The next prime is 5439800083. The reversal of 5439800025 is 5200089345.

The square root of 5439800025 is 73755.

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

5439800025 is a `hidden beast` number, since 543 + 98 + 0 + 0 + 0 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1623525849 + 3816274176 = 40293^2 + 61776^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 5439800025 - 2⁵ = 5439799993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 36508651 + ... + 36508799.

Almost surely, 2^5439800025 is an apocalyptic number.

5439800025 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5439800025 is the 73755-th square number.

5439800025 is the 36878-th centered octagonal number.

It is an amenable number.

5439800025 is an abundant number, since it is smaller than the sum of its proper divisors (5710733908).

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

5439800025 is a wasteful number, since it uses less digits than its factorization.

5439800025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The cubic root of 5439800025 is about 1758.7103182067.

Multiplying 5439800025 by its sum of digits (36), we get a square (195832800900 = 442530²).

The spelling of 5439800025 in words is "five billion, four hundred thirty-nine million, eight hundred thousand, twenty-five".