25121123 has 2 divisors, whose sum is σ = 25121124. Its totient is φ = 25121122.

The previous prime is 25121111. The next prime is 25121147. The reversal of 25121123 is 32112152.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25121123 - 2⁸ = 25120867 is a prime.

It is a super-2 number, since 2×25121123² = 1262141641562258, which contains 22 as substring.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (25121153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12560561 + 12560562.

It is an arithmetic number, because the mean of its divisors is an integer number (12560562).

Almost surely, 2^25121123 is an apocalyptic number.

25121123 is a deficient number, since it is larger than the sum of its proper divisors (1).

25121123 is an equidigital number, since it uses as much as digits as its factorization.

25121123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 17.

The square root of 25121123 is about 5012.0976646510. The cubic root of 25121123 is about 292.8732343103.

Adding to 25121123 its reverse (32112152), we get a palindrome (57233275).

The spelling of 25121123 in words is "twenty-five million, one hundred twenty-one thousand, one hundred twenty-three".