25531232 has 12 divisors (see below), whose sum is σ = 50264676. Its totient is φ = 12765600.

The previous prime is 25531217. The next prime is 25531241. The reversal of 25531232 is 23213552.

It is a junction number, because it is equal to n+sod(n) for n = 25531198 and 25531207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398894 + ... + 398957.

It is an arithmetic number, because the mean of its divisors is an integer number (4188723).

Almost surely, 2^25531232 is an apocalyptic number.

It is an amenable number.

25531232 is a deficient number, since it is larger than the sum of its proper divisors (24733444).

25531232 is an equidigital number, since it uses as much as digits as its factorization.

25531232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797861 (or 797853 counting only the distinct ones).

The product of its digits is 1800, while the sum is 23.

The square root of 25531232 is about 5052.8439516771. The cubic root of 25531232 is about 294.4583837816.

Adding to 25531232 its reverse (23213552), we get a palindrome (48744784).

The spelling of 25531232 in words is "twenty-five million, five hundred thirty-one thousand, two hundred thirty-two".