25425901 has 2 divisors, whose sum is σ = 25425902. Its totient is φ = 25425900.

The previous prime is 25425899. The next prime is 25425937. The reversal of 25425901 is 10952452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18275625 + 7150276 = 4275^2 + 2674^2 .

It is a cyclic number.

It is not a de Polignac number, because 25425901 - 2¹ = 25425899 is a prime.

Together with 25425899, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25425901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25455901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12712950 + 12712951.

It is an arithmetic number, because the mean of its divisors is an integer number (12712951).

Almost surely, 2^25425901 is an apocalyptic number.

It is an amenable number.

25425901 is a deficient number, since it is larger than the sum of its proper divisors (1).

25425901 is an equidigital number, since it uses as much as digits as its factorization.

25425901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 25425901 is about 5042.4102371782. The cubic root of 25425901 is about 294.0528889687.

The spelling of 25425901 in words is "twenty-five million, four hundred twenty-five thousand, nine hundred one".