25822531 has 4 divisors (see below), whose sum is σ = 29511472. Its totient is φ = 22133592.

The previous prime is 25822523. The next prime is 25822543. The reversal of 25822531 is 13522852.

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

It is a cyclic number.

It is not a de Polignac number, because 25822531 - 2³ = 25822523 is a prime.

It is a super-2 number, since 2×25822531² = 1333606214491922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25822531.

It is not an unprimeable number, because it can be changed into a prime (25822331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1844460 + ... + 1844473.

It is an arithmetic number, because the mean of its divisors is an integer number (7377868).

Almost surely, 2^25822531 is an apocalyptic number.

25822531 is a deficient number, since it is larger than the sum of its proper divisors (3688941).

25822531 is an equidigital number, since it uses as much as digits as its factorization.

25822531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688940.

The product of its digits is 4800, while the sum is 28.

The square root of 25822531 is about 5081.5874488195. The cubic root of 25822531 is about 295.5740273744.

The spelling of 25822531 in words is "twenty-five million, eight hundred twenty-two thousand, five hundred thirty-one".