25222401 has 16 divisors (see below), whose sum is σ = 37454400. Its totient is φ = 16775424.

The previous prime is 25222399. The next prime is 25222423. The reversal of 25222401 is 10422252.

It is not a de Polignac number, because 25222401 - 2¹ = 25222399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25222451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14770 + ... + 16388.

It is an arithmetic number, because the mean of its divisors is an integer number (2340900).

Almost surely, 2^25222401 is an apocalyptic number.

It is an amenable number.

25222401 is a deficient number, since it is larger than the sum of its proper divisors (12231999).

25222401 is a wasteful number, since it uses less digits than its factorization.

25222401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205 (or 2199 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 25222401 is about 5022.1908565884. The cubic root of 25222401 is about 293.2662879082.

Adding to 25222401 its reverse (10422252), we get a palindrome (35644653).

The spelling of 25222401 in words is "twenty-five million, two hundred twenty-two thousand, four hundred one".