25995786320 has 80 divisors (see below), whose sum is σ = 72710048640. Its totient is φ = 8443740672.

The previous prime is 25995786287. The next prime is 25995786347. The reversal of 25995786320 is 2368759952.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 1210967 + ... + 1232246.

It is an arithmetic number, because the mean of its divisors is an integer number (908875608).

Almost surely, 2^25995786320 is an apocalyptic number.

25995786320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25995786320 is an abundant number, since it is smaller than the sum of its proper divisors (46714262320).

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

25995786320 is a wasteful number, since it uses less digits than its factorization.

25995786320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443252 (or 2443246 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 25995786320 in words is "twenty-five billion, nine hundred ninety-five million, seven hundred eighty-six thousand, three hundred twenty".