25016479697 has 4 divisors (see below), whose sum is σ = 27290705136. Its totient is φ = 22742254260.

The previous prime is 25016479679. The next prime is 25016479753. The reversal of 25016479697 is 79697461052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25016479697 - 2⁶ = 25016479633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25016479297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137112703 + ... + 1137112724.

It is an arithmetic number, because the mean of its divisors is an integer number (6822676284).

Almost surely, 2^25016479697 is an apocalyptic number.

It is an amenable number.

25016479697 is a deficient number, since it is larger than the sum of its proper divisors (2274225439).

25016479697 is a wasteful number, since it uses less digits than its factorization.

25016479697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274225438.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 25016479697 in words is "twenty-five billion, sixteen million, four hundred seventy-nine thousand, six hundred ninety-seven".