25531123 has 8 divisors (see below), whose sum is σ = 26030576. Its totient is φ = 25034400.

The previous prime is 25531111. The next prime is 25531139. The reversal of 25531123 is 32113552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25531123 - 2⁹ = 25530611 is a prime.

It is a super-2 number, since 2×25531123² = 1303676483282258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25531094 and 25531103.

It is not an unprimeable number, because it can be changed into a prime (25531153) 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 7 ways as a sum of consecutive naturals, for example, 34465 + ... + 35197.

It is an arithmetic number, because the mean of its divisors is an integer number (3253822).

Almost surely, 2^25531123 is an apocalyptic number.

25531123 is a deficient number, since it is larger than the sum of its proper divisors (499453).

25531123 is an equidigital number, since it uses as much as digits as its factorization.

25531123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365.

The product of its digits is 900, while the sum is 22.

The square root of 25531123 is about 5052.8331656606. The cubic root of 25531123 is about 294.4579647392.

Adding to 25531123 its reverse (32113552), we get a palindrome (57644675).

The spelling of 25531123 in words is "twenty-five million, five hundred thirty-one thousand, one hundred twenty-three".