25222541 has 4 divisors (see below), whose sum is σ = 25698492. Its totient is φ = 24746592.

The previous prime is 25222529. The next prime is 25222573. The reversal of 25222541 is 14522252.

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 17682025 + 7540516 = 4205^2 + 2746^2 .

It is a cyclic number.

It is not a de Polignac number, because 25222541 - 2²² = 21028237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25221541) 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, 237896 + ... + 238001.

It is an arithmetic number, because the mean of its divisors is an integer number (6424623).

Almost surely, 2^25222541 is an apocalyptic number.

It is an amenable number.

25222541 is a deficient number, since it is larger than the sum of its proper divisors (475951).

25222541 is an equidigital number, since it uses as much as digits as its factorization.

25222541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475950.

The product of its digits is 1600, while the sum is 23.

The square root of 25222541 is about 5022.2047947092. The cubic root of 25222541 is about 293.2668305106.

Adding to 25222541 its reverse (14522252), we get a palindrome (39744793).

The spelling of 25222541 in words is "twenty-five million, two hundred twenty-two thousand, five hundred forty-one".