25677920 has 72 divisors (see below), whose sum is σ = 63059472. Its totient is φ = 9880320.

The previous prime is 25677907. The next prime is 25677929. The reversal of 25677920 is 2977652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25677929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153677 + ... + 153843.

It is an arithmetic number, because the mean of its divisors is an integer number (875826).

Almost surely, 2^25677920 is an apocalyptic number.

25677920 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 25677920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31529736).

25677920 is an abundant number, since it is smaller than the sum of its proper divisors (37381552).

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

25677920 is a wasteful number, since it uses less digits than its factorization.

25677920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 25677920 is about 5067.3385519422. The cubic root of 25677920 is about 295.0212375786.

The spelling of 25677920 in words is "twenty-five million, six hundred seventy-seven thousand, nine hundred twenty".