25000005015 has 12 divisors (see below), whose sum is σ = 43333342104. Its totient is φ = 13333335984.

The previous prime is 25000005013. The next prime is 25000005029. The reversal of 25000005015 is 51050000052.

It is not a de Polignac number, because 25000005015 - 2¹ = 25000005013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25000005013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277777789 + ... + 277777878.

It is an arithmetic number, because the mean of its divisors is an integer number (3611111842).

Almost surely, 2^25000005015 is an apocalyptic number.

25000005015 is a deficient number, since it is larger than the sum of its proper divisors (18333337089).

25000005015 is a wasteful number, since it uses less digits than its factorization.

25000005015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555555678 (or 555555675 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

Adding to 25000005015 its reverse (51050000052), we get a palindrome (76050005067).

The spelling of 25000005015 in words is "twenty-five billion, five thousand, fifteen".