25550103 has 4 divisors (see below), whose sum is σ = 34066808. Its totient is φ = 17033400.

The previous prime is 25550059. The next prime is 25550113. The reversal of 25550103 is 30105552.

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

It is not a de Polignac number, because 25550103 - 2⁶ = 25550039 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 25550103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25550113) 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, 4258348 + ... + 4258353.

It is an arithmetic number, because the mean of its divisors is an integer number (8516702).

Almost surely, 2^25550103 is an apocalyptic number.

25550103 is a deficient number, since it is larger than the sum of its proper divisors (8516705).

25550103 is an equidigital number, since it uses as much as digits as its factorization.

25550103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8516704.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 25550103 is about 5054.7109709656. The cubic root of 25550103 is about 294.5309139761.

Adding to 25550103 its reverse (30105552), we get a palindrome (55655655).

The spelling of 25550103 in words is "twenty-five million, five hundred fifty thousand, one hundred three".