25097879447 has 8 divisors (see below), whose sum is σ = 25413927552. Its totient is φ = 24783340600.

The previous prime is 25097879431. The next prime is 25097879449. The reversal of 25097879447 is 74497879052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25097879447 - 2⁴ = 25097879431 is a prime.

It is a super-2 number, since 2×25097879447² (a number of 22 digits) contains 22 as substring.

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 25097879447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25097879449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343829 + ... + 410382.

It is an arithmetic number, because the mean of its divisors is an integer number (3176740944).

Almost surely, 2^25097879447 is an apocalyptic number.

25097879447 is a deficient number, since it is larger than the sum of its proper divisors (316048105).

25097879447 is a wasteful number, since it uses less digits than its factorization.

25097879447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754629.

The product of its (nonzero) digits is 35562240, while the sum is 62.

The spelling of 25097879447 in words is "twenty-five billion, ninety-seven million, eight hundred seventy-nine thousand, four hundred forty-seven".