25398080064 has 392 divisors, whose sum is σ = 90926757440. Its totient is φ = 6872988672.

The previous prime is 25398080051. The next prime is 25398080107. The reversal of 25398080064 is 46008089352.

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 55 ways as a sum of consecutive naturals, for example, 6203202 + ... + 6207294.

Almost surely, 2^25398080064 is an apocalyptic number.

25398080064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25398080064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45463378720).

25398080064 is an abundant number, since it is smaller than the sum of its proper divisors (65528677376).

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

25398080064 is an equidigital number, since it uses as much as digits as its factorization.

25398080064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4149 (or 4124 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 25398080064 in words is "twenty-five billion, three hundred ninety-eight million, eighty thousand, sixty-four".