25004320634 has 8 divisors (see below), whose sum is σ = 38304491328. Its totient is φ = 12236156860.

The previous prime is 25004320603. The next prime is 25004320643. The reversal of 25004320634 is 43602340052.

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

It is a junction number, because it is equal to n+sod(n) for n = 25004320597 and 25004320606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133001612 + ... + 133001799.

It is an arithmetic number, because the mean of its divisors is an integer number (4788061416).

Almost surely, 2^25004320634 is an apocalyptic number.

25004320634 is a deficient number, since it is larger than the sum of its proper divisors (13300170694).

25004320634 is a wasteful number, since it uses less digits than its factorization.

25004320634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266003460.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 25004320634 its reverse (43602340052), we get a palindrome (68606660686).

The spelling of 25004320634 in words is "twenty-five billion, four million, three hundred twenty thousand, six hundred thirty-four".