25345404 has 72 divisors (see below), whose sum is σ = 74954880. Its totient is φ = 7070112.

The previous prime is 25345403. The next prime is 25345409. The reversal of 25345404 is 40454352.

25345404 is a `hidden beast` number, since 253 + 4 + 5 + 404 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25345403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9667 + ... + 12005.

It is an arithmetic number, because the mean of its divisors is an integer number (1041040).

Almost surely, 2^25345404 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 25345404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37477440).

25345404 is an abundant number, since it is smaller than the sum of its proper divisors (49609476).

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

25345404 is a wasteful number, since it uses less digits than its factorization.

25345404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399 (or 2394 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 25345404 is about 5034.4219131892. The cubic root of 25345404 is about 293.7422424992.

Adding to 25345404 its reverse (40454352), we get a palindrome (65799756).

The spelling of 25345404 in words is "twenty-five million, three hundred forty-five thousand, four hundred four".