25000000005 has 8 divisors (see below), whose sum is σ = 40000000032. Its totient is φ = 13333333328.

The previous prime is 24999999991. The next prime is 25000000013. The reversal of 25000000005 is 50000000052.

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 25000000005 - 2¹³ = 24999991813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833333319 + ... + 833333348.

It is an arithmetic number, because the mean of its divisors is an integer number (5000000004).

Almost surely, 2^25000000005 is an apocalyptic number.

It is an amenable number.

25000000005 is a deficient number, since it is larger than the sum of its proper divisors (15000000027).

25000000005 is a wasteful number, since it uses less digits than its factorization.

25000000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666666675.

The product of its (nonzero) digits is 50, while the sum is 12.

Adding to 25000000005 its reverse (50000000052), we get a palindrome (75000000057).

The spelling of 25000000005 in words is "twenty-five billion, five", and thus it is an aban number and an uban number.