25504901 has 2 divisors, whose sum is σ = 25504902. Its totient is φ = 25504900.

The previous prime is 25504883. The next prime is 25504903. The reversal of 25504901 is 10940552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25502500 + 2401 = 5050^2 + 49^2 .

It is a cyclic number.

It is not a de Polignac number, because 25504901 - 2⁶ = 25504837 is a prime.

Together with 25504903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25504903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12752450 + 12752451.

It is an arithmetic number, because the mean of its divisors is an integer number (12752451).

Almost surely, 2^25504901 is an apocalyptic number.

It is an amenable number.

25504901 is a deficient number, since it is larger than the sum of its proper divisors (1).

25504901 is an equidigital number, since it uses as much as digits as its factorization.

25504901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 25504901 is about 5050.2377171773. The cubic root of 25504901 is about 294.3571215230.

The spelling of 25504901 in words is "twenty-five million, five hundred four thousand, nine hundred one".