25330531 has 4 divisors (see below), whose sum is σ = 25530112. Its totient is φ = 25130952.

The previous prime is 25330517. The next prime is 25330541. The reversal of 25330531 is 13503352.

It is a happy number.

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 25330531 - 2¹¹ = 25328483 is a prime.

It is a super-3 number, since 3×25330531³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25330541) 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, 99600 + ... + 99853.

It is an arithmetic number, because the mean of its divisors is an integer number (6382528).

Almost surely, 2^25330531 is an apocalyptic number.

25330531 is a deficient number, since it is larger than the sum of its proper divisors (199581).

25330531 is a wasteful number, since it uses less digits than its factorization.

25330531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199580.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 25330531 is about 5032.9445655600. The cubic root of 25330531 is about 293.6847740497.

Adding to 25330531 its reverse (13503352), we get a palindrome (38833883).

The spelling of 25330531 in words is "twenty-five million, three hundred thirty thousand, five hundred thirty-one".