25478990214 has 16 divisors (see below), whose sum is σ = 51180507120. Its totient is φ = 8455908960.

The previous prime is 25478990213. The next prime is 25478990219. The reversal of 25478990214 is 41209987452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25478990213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9270457 + ... + 9273204.

It is an arithmetic number, because the mean of its divisors is an integer number (3198781695).

Almost surely, 2^25478990214 is an apocalyptic number.

25478990214 is an abundant number, since it is smaller than the sum of its proper divisors (25701516906).

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

25478990214 is a wasteful number, since it uses less digits than its factorization.

25478990214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18543895.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 25478990214 in words is "twenty-five billion, four hundred seventy-eight million, nine hundred ninety thousand, two hundred fourteen".