25488539 has 4 divisors (see below), whose sum is σ = 25683240. Its totient is φ = 25293840.

The previous prime is 25488521. The next prime is 25488581. The reversal of 25488539 is 93588452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25488539 - 2¹² = 25484443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25488539.

It is not an unprimeable number, because it can be changed into a prime (25488599) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 97154 + ... + 97415.

It is an arithmetic number, because the mean of its divisors is an integer number (6420810).

Almost surely, 2^25488539 is an apocalyptic number.

25488539 is a deficient number, since it is larger than the sum of its proper divisors (194701).

25488539 is a wasteful number, since it uses less digits than its factorization.

25488539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194700.

The product of its digits is 345600, while the sum is 44.

The square root of 25488539 is about 5048.6175335432. The cubic root of 25488539 is about 294.2941623620.

The spelling of 25488539 in words is "twenty-five million, four hundred eighty-eight thousand, five hundred thirty-nine".