25222004 has 6 divisors (see below), whose sum is σ = 44138514. Its totient is φ = 12611000.

The previous prime is 25221997. The next prime is 25222013. The reversal of 25222004 is 40022252.

It can be written as a sum of positive squares in only one way, i.e., 21141604 + 4080400 = 4598^2 + 2020^2 .

It is a super-2 number, since 2×25222004² = 1272298971552032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3152747 + ... + 3152754.

It is an arithmetic number, because the mean of its divisors is an integer number (7356419).

Almost surely, 2^25222004 is an apocalyptic number.

It is an amenable number.

25222004 is a deficient number, since it is larger than the sum of its proper divisors (18916510).

25222004 is a wasteful number, since it uses less digits than its factorization.

25222004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305505 (or 6305503 counting only the distinct ones).

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

The square root of 25222004 is about 5022.1513318497. The cubic root of 25222004 is about 293.2647492319.

Adding to 25222004 its reverse (40022252), we get a palindrome (65244256).

The spelling of 25222004 in words is "twenty-five million, two hundred twenty-two thousand, four".