25221065003 has 8 divisors (see below), whose sum is σ = 27208519488. Its totient is φ = 23289595264.

The previous prime is 25221064997. The next prime is 25221065011. The reversal of 25221065003 is 30056012252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-25221065003 is a prime.

It is a super-2 number, since 2×25221065003² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25221065053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13995251 + ... + 13997052.

It is an arithmetic number, because the mean of its divisors is an integer number (3401064936).

Almost surely, 2^25221065003 is an apocalyptic number.

25221065003 is a deficient number, since it is larger than the sum of its proper divisors (1987454485).

25221065003 is a wasteful number, since it uses less digits than its factorization.

25221065003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27992373.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 25221065003 its reverse (30056012252), we get a palindrome (55277077255).

The spelling of 25221065003 in words is "twenty-five billion, two hundred twenty-one million, sixty-five thousand, three".