25394004 has 18 divisors (see below), whose sum is σ = 64190490. Its totient is φ = 8464656.

The previous prime is 25393993. The next prime is 25394009. The reversal of 25394004 is 40049352.

25394004 is a `hidden beast` number, since 253 + 9 + 400 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19342404 + 6051600 = 4398^2 + 2460^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25394009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 352659 + ... + 352730.

Almost surely, 2^25394004 is an apocalyptic number.

It is an amenable number.

25394004 is an abundant number, since it is smaller than the sum of its proper divisors (38796486).

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

25394004 is a wasteful number, since it uses less digits than its factorization.

25394004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705399 (or 705394 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 25394004 is about 5039.2463722267. The cubic root of 25394004 is about 293.9298735979.

The spelling of 25394004 in words is "twenty-five million, three hundred ninety-four thousand, four".