25231123 has 4 divisors (see below), whose sum is σ = 25244640. Its totient is φ = 25217608.

The previous prime is 25231121. The next prime is 25231147. The reversal of 25231123 is 32113252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25231123 - 2¹ = 25231121 is a prime.

It is a super-2 number, since 2×25231123² = 1273219135682258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25231123.

It is not an unprimeable number, because it can be changed into a prime (25231121) 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 3 ways as a sum of consecutive naturals, for example, 3403 + ... + 7876.

It is an arithmetic number, because the mean of its divisors is an integer number (6311160).

Almost surely, 2^25231123 is an apocalyptic number.

25231123 is a deficient number, since it is larger than the sum of its proper divisors (13517).

25231123 is a wasteful number, since it uses less digits than its factorization.

25231123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13516.

The product of its digits is 360, while the sum is 19.

The square root of 25231123 is about 5023.0591276631. The cubic root of 25231123 is about 293.3000882031.

Adding to 25231123 its reverse (32113252), we get a palindrome (57344375).

It can be divided in two parts, 252 and 31123, that added together give a triangular number (31375 = T₂₅₀).

The spelling of 25231123 in words is "twenty-five million, two hundred thirty-one thousand, one hundred twenty-three".