25462121 has 2 divisors, whose sum is σ = 25462122. Its totient is φ = 25462120.

The previous prime is 25462111. The next prime is 25462123. The reversal of 25462121 is 12126452.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19678096 + 5784025 = 4436^2 + 2405^2 .

It is a cyclic number.

It is not a de Polignac number, because 25462121 - 2⁶ = 25462057 is a prime.

It is a Sophie Germain prime.

Together with 25462123, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25462123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12731060 + 12731061.

It is an arithmetic number, because the mean of its divisors is an integer number (12731061).

Almost surely, 2^25462121 is an apocalyptic number.

It is an amenable number.

25462121 is a deficient number, since it is larger than the sum of its proper divisors (1).

25462121 is an equidigital number, since it uses as much as digits as its factorization.

25462121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 23.

The square root of 25462121 is about 5046.0004954419. Note that the first 3 decimals coincide. The cubic root of 25462121 is about 294.1924519320.

Adding to 25462121 its reverse (12126452), we get a palindrome (37588573).

The spelling of 25462121 in words is "twenty-five million, four hundred sixty-two thousand, one hundred twenty-one".