25221103 has 2 divisors, whose sum is σ = 25221104. Its totient is φ = 25221102.

The previous prime is 25221071. The next prime is 25221137. The reversal of 25221103 is 30112252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25221103 - 2⁵ = 25221071 is a prime.

It is a super-2 number, since 2×25221103² = 1272208073073218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25221173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12610551 + 12610552.

It is an arithmetic number, because the mean of its divisors is an integer number (12610552).

Almost surely, 2^25221103 is an apocalyptic number.

25221103 is a deficient number, since it is larger than the sum of its proper divisors (1).

25221103 is an equidigital number, since it uses as much as digits as its factorization.

25221103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 25221103 is about 5022.0616284550. The cubic root of 25221103 is about 293.2612571134.

Adding to 25221103 its reverse (30112252), we get a palindrome (55333355).

The spelling of 25221103 in words is "twenty-five million, two hundred twenty-one thousand, one hundred three".