25621376 has 64 divisors (see below), whose sum is σ = 57576960. Its totient is φ = 11251200.

The previous prime is 25621369. The next prime is 25621417. The reversal of 25621376 is 67312652.

It is a tau number, because it is divible by the number of its divisors (64).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43355 + ... + 43941.

It is an arithmetic number, because the mean of its divisors is an integer number (899640).

Almost surely, 2^25621376 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 25621376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28788480).

25621376 is an abundant number, since it is smaller than the sum of its proper divisors (31955584).

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

25621376 is a wasteful number, since it uses less digits than its factorization.

25621376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 631 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 25621376 is about 5061.7562169666. The cubic root of 25621376 is about 294.8045281712.

The spelling of 25621376 in words is "twenty-five million, six hundred twenty-one thousand, three hundred seventy-six".