25860128 has 48 divisors (see below), whose sum is σ = 61617024. Its totient is φ = 10429440.

The previous prime is 25860127. The next prime is 25860143. The reversal of 25860128 is 82106852.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 25860094 and 25860103.

It is not an unprimeable number, because it can be changed into a prime (25860127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413 + ... + 7203.

It is an arithmetic number, because the mean of its divisors is an integer number (1283688).

Almost surely, 2^25860128 is an apocalyptic number.

25860128 is a gapful number since it is divisible by the number (28) 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 25860128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30808512).

25860128 is an abundant number, since it is smaller than the sum of its proper divisors (35756896).

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

25860128 is a wasteful number, since it uses less digits than its factorization.

25860128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6825 (or 6817 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 25860128 is about 5085.2854393829. The cubic root of 25860128 is about 295.7174074300.

The spelling of 25860128 in words is "twenty-five million, eight hundred sixty thousand, one hundred twenty-eight".