25425201 has 4 divisors (see below), whose sum is σ = 33900272. Its totient is φ = 16950132.

The previous prime is 25425181. The next prime is 25425203. The reversal of 25425201 is 10252452.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25425201 - 2⁶ = 25425137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25425203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4237531 + ... + 4237536.

It is an arithmetic number, because the mean of its divisors is an integer number (8475068).

Almost surely, 2^25425201 is an apocalyptic number.

It is an amenable number.

25425201 is a deficient number, since it is larger than the sum of its proper divisors (8475071).

25425201 is an equidigital number, since it uses as much as digits as its factorization.

25425201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8475070.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 25425201 is about 5042.3408254500. The cubic root of 25425201 is about 294.0501904224.

Adding to 25425201 its reverse (10252452), we get a palindrome (35677653).

The spelling of 25425201 in words is "twenty-five million, four hundred twenty-five thousand, two hundred one".