25239991045479 has 96 divisors (see below), whose sum is σ = 41296265141760. Its totient is φ = 13634562816000.

The previous prime is 25239991045469. The next prime is 25239991045589. The reversal of 25239991045479 is 97454019993252.

It is not a de Polignac number, because 25239991045479 - 2¹⁶ = 25239990979943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25239991045469) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4936432227 + ... + 4936437339.

It is an arithmetic number, because the mean of its divisors is an integer number (430169428560).

Almost surely, 2^{25239991045479} is an apocalyptic number.

25239991045479 is a deficient number, since it is larger than the sum of its proper divisors (16056274096281).

25239991045479 is a wasteful number, since it uses less digits than its factorization.

25239991045479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8581 (or 8574 counting only the distinct ones).

The product of its (nonzero) digits is 220449600, while the sum is 69.

The spelling of 25239991045479 in words is "twenty-five trillion, two hundred thirty-nine billion, nine hundred ninety-one million, forty-five thousand, four hundred seventy-nine".