25221201 has 4 divisors (see below), whose sum is σ = 33628272. Its totient is φ = 16814132.

The previous prime is 25221199. The next prime is 25221211. The reversal of 25221201 is 10212252.

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 a cyclic number.

It is not a de Polignac number, because 25221201 - 2¹ = 25221199 is a prime.

It is a super-2 number, since 2×25221201² = 1272217959764802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25221211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4203531 + ... + 4203536.

It is an arithmetic number, because the mean of its divisors is an integer number (8407068).

Almost surely, 2^25221201 is an apocalyptic number.

It is an amenable number.

25221201 is a deficient number, since it is larger than the sum of its proper divisors (8407071).

25221201 is an equidigital number, since it uses as much as digits as its factorization.

25221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8407070.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 25221201 is about 5022.0713853947. The cubic root of 25221201 is about 293.2616369483.

Adding to 25221201 its reverse (10212252), we get a palindrome (35433453).

The spelling of 25221201 in words is "twenty-five million, two hundred twenty-one thousand, two hundred one".