25701205920 has 384 divisors, whose sum is σ = 91090137600. Its totient is φ = 6047612928.

The previous prime is 25701205883. The next prime is 25701205961. The reversal of 25701205920 is 2950210752.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19723989 + ... + 19725291.

It is an arithmetic number, because the mean of its divisors is an integer number (237213900).

Almost surely, 2^25701205920 is an apocalyptic number.

25701205920 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 25701205920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45545068800).

25701205920 is an abundant number, since it is smaller than the sum of its proper divisors (65388931680).

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

25701205920 is a wasteful number, since it uses less digits than its factorization.

25701205920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The spelling of 25701205920 in words is "twenty-five billion, seven hundred one million, two hundred five thousand, nine hundred twenty".