25609916384 has 96 divisors (see below), whose sum is σ = 57409380000. Its totient is φ = 11148171264.

The previous prime is 25609916369. The next prime is 25609916401. The reversal of 25609916384 is 48361990652.

It is a super-3 number, since 3×25609916384³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1802942 + ... + 1817090.

It is an arithmetic number, because the mean of its divisors is an integer number (598014375).

Almost surely, 2^25609916384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25609916384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28704690000).

25609916384 is an abundant number, since it is smaller than the sum of its proper divisors (31799463616).

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

25609916384 is a wasteful number, since it uses less digits than its factorization.

25609916384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14420 (or 14412 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 25609916384 in words is "twenty-five billion, six hundred nine million, nine hundred sixteen thousand, three hundred eighty-four".