25542404 has 6 divisors (see below), whose sum is σ = 44699214. Its totient is φ = 12771200.

The previous prime is 25542389. The next prime is 25542421. The reversal of 25542404 is 40424552.

It can be written as a sum of positive squares in only one way, i.e., 24522304 + 1020100 = 4952^2 + 1010^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3192797 + ... + 3192804.

It is an arithmetic number, because the mean of its divisors is an integer number (7449869).

Almost surely, 2^25542404 is an apocalyptic number.

It is an amenable number.

25542404 is a deficient number, since it is larger than the sum of its proper divisors (19156810).

25542404 is a wasteful number, since it uses less digits than its factorization.

25542404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385605 (or 6385603 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 25542404 is about 5053.9493467980. The cubic root of 25542404 is about 294.5013273856.

Adding to 25542404 its reverse (40424552), we get a palindrome (65966956).

The spelling of 25542404 in words is "twenty-five million, five hundred forty-two thousand, four hundred four".