25131123 has 12 divisors (see below), whose sum is σ = 36661248. Its totient is φ = 16587600.

The previous prime is 25131107. The next prime is 25131131. The reversal of 25131123 is 32113152.

It is not a de Polignac number, because 25131123 - 2⁴ = 25131107 is a prime.

It is a super-2 number, since 2×25131123² = 1263146686482258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25131096 and 25131105.

It is not an unprimeable number, because it can be changed into a prime (25131133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12915 + ... + 14732.

It is an arithmetic number, because the mean of its divisors is an integer number (3055104).

Almost surely, 2^25131123 is an apocalyptic number.

25131123 is a deficient number, since it is larger than the sum of its proper divisors (11530125).

25131123 is a wasteful number, since it uses less digits than its factorization.

25131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27754 (or 27751 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 25131123 is about 5013.0951517002. The cubic root of 25131123 is about 292.9120906387.

Adding to 25131123 its reverse (32113152), we get a palindrome (57244275).

The spelling of 25131123 in words is "twenty-five million, one hundred thirty-one thousand, one hundred twenty-three".