25257080 has 64 divisors (see below), whose sum is σ = 60480000. Its totient is φ = 9465984.

The previous prime is 25257077. The next prime is 25257101. The reversal of 25257080 is 8075252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126821 + ... + 127019.

It is an arithmetic number, because the mean of its divisors is an integer number (945000).

Almost surely, 2^25257080 is an apocalyptic number.

25257080 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 25257080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30240000).

25257080 is an abundant number, since it is smaller than the sum of its proper divisors (35222920).

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

25257080 is a wasteful number, since it uses less digits than its factorization.

25257080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 25257080 is about 5025.6422475142. The cubic root of 25257080 is about 293.4006330889.

The spelling of 25257080 in words is "twenty-five million, two hundred fifty-seven thousand, eighty".