25478990234 has 16 divisors (see below), whose sum is σ = 40486236000. Its totient is φ = 11992119984.

The previous prime is 25478990219. The next prime is 25478990249. The reversal of 25478990234 is 43209987452.

It is an interprime number because it is at equal distance from previous prime (25478990219) and next prime (25478990249).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2129384 + ... + 2141315.

It is an arithmetic number, because the mean of its divisors is an integer number (2530389750).

Almost surely, 2^25478990234 is an apocalyptic number.

25478990234 is a deficient number, since it is larger than the sum of its proper divisors (15007245766).

25478990234 is a wasteful number, since it uses less digits than its factorization.

25478990234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270877.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 25478990234 in words is "twenty-five billion, four hundred seventy-eight million, nine hundred ninety thousand, two hundred thirty-four".