25240004 has 12 divisors (see below), whose sum is σ = 44467500. Its totient is φ = 12535008.

The previous prime is 25239979. The next prime is 25240013. The reversal of 25240004 is 40004252.

It can be written as a sum of positive squares in 2 ways, for example, as 14807104 + 10432900 = 3848^2 + 3230^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20579 + ... + 21770.

It is an arithmetic number, because the mean of its divisors is an integer number (3705625).

Almost surely, 2^25240004 is an apocalyptic number.

It is an amenable number.

25240004 is a deficient number, since it is larger than the sum of its proper divisors (19227496).

25240004 is a wasteful number, since it uses less digits than its factorization.

25240004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42502 (or 42500 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 25240004 is about 5023.9430729259. The cubic root of 25240004 is about 293.3344966666.

Adding to 25240004 its reverse (40004252), we get a palindrome (65244256).

The spelling of 25240004 in words is "twenty-five million, two hundred forty thousand, four".