25000000012 has 48 divisors (see below), whose sum is σ = 51235238880. Its totient is φ = 10566208512.

The previous prime is 24999999991. The next prime is 25000000013. The reversal of 25000000012 is 21000000052.

It is not an unprimeable number, because it can be changed into a prime (25000000013) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 349462 + ... + 414877.

It is an arithmetic number, because the mean of its divisors is an integer number (1067400810).

Almost surely, 2^25000000012 is an apocalyptic number.

It is an amenable number.

25000000012 is an abundant number, since it is smaller than the sum of its proper divisors (26235238868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25000000012 is a wasteful number, since it uses less digits than its factorization.

25000000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764410 (or 764408 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

Adding to 25000000012 its reverse (21000000052), we get a palindrome (46000000064).

The spelling of 25000000012 in words is "twenty-five billion, twelve", and thus it is an aban number and an uban number.