25490722 has 4 divisors (see below), whose sum is σ = 38236086. Its totient is φ = 12745360.

The previous prime is 25490687. The next prime is 25490737. The reversal of 25490722 is 22709452.

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., 22174681 + 3316041 = 4709^2 + 1821^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 14.

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, 6372679 + ... + 6372682.

Almost surely, 2^25490722 is an apocalyptic number.

25490722 is a deficient number, since it is larger than the sum of its proper divisors (12745364).

25490722 is a wasteful number, since it uses less digits than its factorization.

25490722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12745363.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 25490722 is about 5048.8337267135. The cubic root of 25490722 is about 294.3025638612.

The spelling of 25490722 in words is "twenty-five million, four hundred ninety thousand, seven hundred twenty-two".