25532871 has 48 divisors (see below), whose sum is σ = 44126208. Its totient is φ = 13003200.

The previous prime is 25532869. The next prime is 25532893. The reversal of 25532871 is 17823552.

It is not a de Polignac number, because 25532871 - 2¹ = 25532869 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25532821) 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 47 ways as a sum of consecutive naturals, for example, 59026 + ... + 59456.

It is an arithmetic number, because the mean of its divisors is an integer number (919296).

Almost surely, 2^25532871 is an apocalyptic number.

25532871 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25532871 is a deficient number, since it is larger than the sum of its proper divisors (18593337).

25532871 is a wasteful number, since it uses less digits than its factorization.

25532871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 485 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 25532871 is about 5053.0061349656. The cubic root of 25532871 is about 294.4646846522.

The spelling of 25532871 in words is "twenty-five million, five hundred thirty-two thousand, eight hundred seventy-one".