25332531 has 16 divisors (see below), whose sum is σ = 39646464. Its totient is φ = 14084064.

The previous prime is 25332511. The next prime is 25332539. The reversal of 25332531 is 13523352.

It is a happy number.

It is not a de Polignac number, because 25332531 - 2¹⁷ = 25201459 is a prime.

It is a super-2 number, since 2×25332531² = 1283474253731922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25332539) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 15525 + ... + 17078.

It is an arithmetic number, because the mean of its divisors is an integer number (2477904).

Almost surely, 2^25332531 is an apocalyptic number.

25332531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25332531 is a deficient number, since it is larger than the sum of its proper divisors (14313933).

25332531 is a wasteful number, since it uses less digits than its factorization.

25332531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32650.

The product of its digits is 2700, while the sum is 24.

The square root of 25332531 is about 5033.1432524815. The cubic root of 25332531 is about 293.6925032480.

Adding to 25332531 its reverse (13523352), we get a palindrome (38855883).

The spelling of 25332531 in words is "twenty-five million, three hundred thirty-two thousand, five hundred thirty-one".