25440104 has 8 divisors (see below), whose sum is σ = 47700210. Its totient is φ = 12720048.

The previous prime is 25440091. The next prime is 25440167. The reversal of 25440104 is 40104452.

It can be written as a sum of positive squares in only one way, i.e., 13675204 + 11764900 = 3698^2 + 3430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1589999 + ... + 1590014.

Almost surely, 2^25440104 is an apocalyptic number.

It is an amenable number.

25440104 is a deficient number, since it is larger than the sum of its proper divisors (22260106).

25440104 is a wasteful number, since it uses less digits than its factorization.

25440104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180019 (or 3180015 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 25440104 is about 5043.8183948275. The cubic root of 25440104 is about 294.1076317782.

Adding to 25440104 its reverse (40104452), we get a palindrome (65544556).

The spelling of 25440104 in words is "twenty-five million, four hundred forty thousand, one hundred four".