25693729120 has 96 divisors (see below), whose sum is σ = 62566045920. Its totient is φ = 9964892160.

The previous prime is 25693729097. The next prime is 25693729129. The reversal of 25693729120 is 2192739652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25693729129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1057266 + ... + 1081294.

It is an arithmetic number, because the mean of its divisors is an integer number (651729645).

Almost surely, 2^25693729120 is an apocalyptic number.

25693729120 is a gapful number since it is divisible by the number (20) 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 25693729120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31283022960).

25693729120 is an abundant number, since it is smaller than the sum of its proper divisors (36872316800).

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

25693729120 is a wasteful number, since it uses less digits than its factorization.

25693729120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24248 (or 24240 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 25693729120 in words is "twenty-five billion, six hundred ninety-three million, seven hundred twenty-nine thousand, one hundred twenty".