25321003 has 4 divisors (see below), whose sum is σ = 25571808. Its totient is φ = 25070200.

The previous prime is 25320991. The next prime is 25321013. The reversal of 25321003 is 30012352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25321003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25321013) 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, 125251 + ... + 125452.

It is an arithmetic number, because the mean of its divisors is an integer number (6392952).

Almost surely, 2^25321003 is an apocalyptic number.

25321003 is a deficient number, since it is larger than the sum of its proper divisors (250805).

25321003 is a wasteful number, since it uses less digits than its factorization.

25321003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250804.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 25321003 is about 5031.9979133541. The cubic root of 25321003 is about 293.6479465621.

Adding to 25321003 its reverse (30012352), we get a palindrome (55333355).

The spelling of 25321003 in words is "twenty-five million, three hundred twenty-one thousand, three".