25861123 has 2 divisors, whose sum is σ = 25861124. Its totient is φ = 25861122.

The previous prime is 25861093. The next prime is 25861141. The reversal of 25861123 is 32116852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25861123 - 2¹⁷ = 25730051 is a prime.

It is a super-2 number, since 2×25861123² = 1337595365642258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25861091 and 25861100.

It is not a weakly prime, because it can be changed into another prime (25861153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12930561 + 12930562.

It is an arithmetic number, because the mean of its divisors is an integer number (12930562).

Almost surely, 2^25861123 is an apocalyptic number.

25861123 is a deficient number, since it is larger than the sum of its proper divisors (1).

25861123 is an equidigital number, since it uses as much as digits as its factorization.

25861123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

The square root of 25861123 is about 5085.3832697251. The cubic root of 25861123 is about 295.7212000775.

Adding to 25861123 its reverse (32116852), we get a palindrome (57977975).

The spelling of 25861123 in words is "twenty-five million, eight hundred sixty-one thousand, one hundred twenty-three".