25670744064 has 432 divisors, whose sum is σ = 88385857560. Its totient is φ = 7153090560.

The previous prime is 25670744003. The next prime is 25670744093. The reversal of 25670744064 is 46044707652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 38835894 + ... + 38836554.

Almost surely, 2^25670744064 is an apocalyptic number.

25670744064 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 25670744064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44192928780).

25670744064 is an abundant number, since it is smaller than the sum of its proper divisors (62715113496).

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

25670744064 is a wasteful number, since it uses less digits than its factorization.

25670744064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 45.

The spelling of 25670744064 in words is "twenty-five billion, six hundred seventy million, seven hundred forty-four thousand, sixty-four".