25489239 has 32 divisors (see below), whose sum is σ = 37635840. Its totient is φ = 15278592.

The previous prime is 25489201. The next prime is 25489291. The reversal of 25489239 is 93298452.

It is not a de Polignac number, because 25489239 - 2¹³ = 25481047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25489239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25489039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129289 + ... + 129485.

It is an arithmetic number, because the mean of its divisors is an integer number (1176120).

Almost surely, 2^25489239 is an apocalyptic number.

25489239 is a deficient number, since it is larger than the sum of its proper divisors (12146601).

25489239 is a wasteful number, since it uses less digits than its factorization.

25489239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319.

The product of its digits is 155520, while the sum is 42.

The square root of 25489239 is about 5048.6868589763. The cubic root of 25489239 is about 294.2968564360.

The spelling of 25489239 in words is "twenty-five million, four hundred eighty-nine thousand, two hundred thirty-nine".