25211003 has 4 divisors (see below), whose sum is σ = 25229808. Its totient is φ = 25192200.

The previous prime is 25210993. The next prime is 25211009. The reversal of 25211003 is 30011252.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25211003 - 2⁸ = 25210747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25211009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7223 + ... + 10128.

It is an arithmetic number, because the mean of its divisors is an integer number (6307452).

Almost surely, 2^25211003 is an apocalyptic number.

25211003 is a deficient number, since it is larger than the sum of its proper divisors (18805).

25211003 is a wasteful number, since it uses less digits than its factorization.

25211003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18804.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 25211003 is about 5021.0559646353. The cubic root of 25211003 is about 293.2221055853. Note that the first 3 decimals are identical.

Adding to 25211003 its reverse (30011252), we get a palindrome (55222255).

The spelling of 25211003 in words is "twenty-five million, two hundred eleven thousand, three".