25222546 has 4 divisors (see below), whose sum is σ = 37833822. Its totient is φ = 12611272.

The previous prime is 25222529. The next prime is 25222573. The reversal of 25222546 is 64522252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23088025 + 2134521 = 4805^2 + 1461^2 .

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, 6305635 + ... + 6305638.

Almost surely, 2^25222546 is an apocalyptic number.

25222546 is a deficient number, since it is larger than the sum of its proper divisors (12611276).

25222546 is a wasteful number, since it uses less digits than its factorization.

25222546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12611275.

The product of its digits is 9600, while the sum is 28.

The square root of 25222546 is about 5022.2052924985. The cubic root of 25222546 is about 293.2668498892.

Adding to 25222546 its reverse (64522252), we get a palindrome (89744798).

The spelling of 25222546 in words is "twenty-five million, two hundred twenty-two thousand, five hundred forty-six".