25334779712 has 168 divisors, whose sum is σ = 57157607808. Its totient is φ = 11048140800.

The previous prime is 25334779709. The next prime is 25334779739. The reversal of 25334779712 is 21797743352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93486137 + ... + 93486407.

It is an arithmetic number, because the mean of its divisors is an integer number (340223856).

Almost surely, 2^25334779712 is an apocalyptic number.

25334779712 is a gapful number since it is divisible by the number (22) 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 25334779712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28578803904).

25334779712 is an abundant number, since it is smaller than the sum of its proper divisors (31822828096).

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

25334779712 is a wasteful number, since it uses less digits than its factorization.

25334779712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 418 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 50.

The spelling of 25334779712 in words is "twenty-five billion, three hundred thirty-four million, seven hundred seventy-nine thousand, seven hundred twelve".