25502201 has 4 divisors (see below), whose sum is σ = 25515252. Its totient is φ = 25489152.

The previous prime is 25502189. The next prime is 25502221. The reversal of 25502201 is 10220552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 900601 + 24601600 = 949^2 + 4960^2 .

It is a cyclic number.

It is not a de Polignac number, because 25502201 - 2¹⁸ = 25240057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25502201.

It is not an unprimeable number, because it can be changed into a prime (25502221) 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, 2936 + ... + 7721.

It is an arithmetic number, because the mean of its divisors is an integer number (6378813).

Almost surely, 2^25502201 is an apocalyptic number.

It is an amenable number.

25502201 is a deficient number, since it is larger than the sum of its proper divisors (13051).

25502201 is a wasteful number, since it uses less digits than its factorization.

25502201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13050.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 25502201 is about 5049.9703959528. The cubic root of 25502201 is about 294.3467340780.

Adding to 25502201 its reverse (10220552), we get a palindrome (35722753).

The spelling of 25502201 in words is "twenty-five million, five hundred two thousand, two hundred one".