25490984337 has 48 divisors (see below), whose sum is σ = 46493722240. Its totient is φ = 13441619520.

The previous prime is 25490984333. The next prime is 25490984359. The reversal of 25490984337 is 73348909452.

25490984337 is a `hidden beast` number, since 2 + 549 + 0 + 98 + 4 + 3 + 3 + 7 = 666.

It is not a de Polignac number, because 25490984337 - 2² = 25490984333 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25490984333) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 7912387 + ... + 7915607.

Almost surely, 2^25490984337 is an apocalyptic number.

25490984337 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

25490984337 is a deficient number, since it is larger than the sum of its proper divisors (21002737903).

25490984337 is an frugal number, since it uses more digits than its factorization.

25490984337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6471 (or 3244 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 25490984337 in words is "twenty-five billion, four hundred ninety million, nine hundred eighty-four thousand, three hundred thirty-seven".