25422531 has 16 divisors (see below), whose sum is σ = 37130400. Its totient is φ = 15400448.

The previous prime is 25422499. The next prime is 25422533. The reversal of 25422531 is 13522452.

It is a cyclic number.

It is not a de Polignac number, because 25422531 - 2⁵ = 25422499 is a prime.

It is a super-2 number, since 2×25422531² = 1292610164891922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25422533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7116 + ... + 10073.

It is an arithmetic number, because the mean of its divisors is an integer number (2320650).

Almost surely, 2^25422531 is an apocalyptic number.

25422531 is a deficient number, since it is larger than the sum of its proper divisors (11707869).

25422531 is a wasteful number, since it uses less digits than its factorization.

25422531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17238.

The product of its digits is 2400, while the sum is 24.

The square root of 25422531 is about 5042.0760605132. The cubic root of 25422531 is about 294.0398969411.

Adding to 25422531 its reverse (13522452), we get a palindrome (38944983).

The spelling of 25422531 in words is "twenty-five million, four hundred twenty-two thousand, five hundred thirty-one".