25252128 has 96 divisors (see below), whose sum is σ = 80377920. Its totient is φ = 7649280.

The previous prime is 25252111. The next prime is 25252133. The reversal of 25252128 is 82125252.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8176 + ... + 10832.

It is an arithmetic number, because the mean of its divisors is an integer number (837270).

Almost surely, 2^25252128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25252128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40188960).

25252128 is an abundant number, since it is smaller than the sum of its proper divisors (55125792).

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

25252128 is a wasteful number, since it uses less digits than its factorization.

25252128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687 (or 2673 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 25252128 is about 5025.1495500134. The cubic root of 25252128 is about 293.3814567510.

The spelling of 25252128 in words is "twenty-five million, two hundred fifty-two thousand, one hundred twenty-eight".