25920738912 has 48 divisors (see below), whose sum is σ = 68059459440. Its totient is φ = 8638021632.

The previous prime is 25920738869. The next prime is 25920738917. The reversal of 25920738912 is 21983702952.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25920738917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363688 + ... + 429080.

It is an arithmetic number, because the mean of its divisors is an integer number (1417905405).

Almost surely, 2^25920738912 is an apocalyptic number.

It is an amenable number.

25920738912 is an abundant number, since it is smaller than the sum of its proper divisors (42138720528).

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

25920738912 is a wasteful number, since it uses less digits than its factorization.

25920738912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69535 (or 69527 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 25920738912 in words is "twenty-five billion, nine hundred twenty million, seven hundred thirty-eight thousand, nine hundred twelve".