25651123 has 2 divisors, whose sum is σ = 25651124. Its totient is φ = 25651122.

The previous prime is 25651111. The next prime is 25651127. The reversal of 25651123 is 32115652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25651123 - 2¹⁷ = 25520051 is a prime.

It is a super-2 number, since 2×25651123² = 1315960222322258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25651127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12825561 + 12825562.

It is an arithmetic number, because the mean of its divisors is an integer number (12825562).

Almost surely, 2^25651123 is an apocalyptic number.

25651123 is a deficient number, since it is larger than the sum of its proper divisors (1).

25651123 is an equidigital number, since it uses as much as digits as its factorization.

25651123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 25.

The square root of 25651123 is about 5064.6937715917. The cubic root of 25651123 is about 294.9185756317.

Adding to 25651123 its reverse (32115652), we get a palindrome (57766775).

The spelling of 25651123 in words is "twenty-five million, six hundred fifty-one thousand, one hundred twenty-three".