25421250003 has 8 divisors (see below), whose sum is σ = 33896691600. Its totient is φ = 16946654208.

The previous prime is 25421249989. The next prime is 25421250061. The reversal of 25421250003 is 30005212452.

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

It is not a de Polignac number, because 25421250003 - 2³⁰ = 24347508179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25421250073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137638 + ... + 264171.

It is an arithmetic number, because the mean of its divisors is an integer number (4237086450).

Almost surely, 2^25421250003 is an apocalyptic number.

25421250003 is a deficient number, since it is larger than the sum of its proper divisors (8475441597).

25421250003 is a wasteful number, since it uses less digits than its factorization.

25421250003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422901.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 25421250003 its reverse (30005212452), we get a palindrome (55426462455).

The spelling of 25421250003 in words is "twenty-five billion, four hundred twenty-one million, two hundred fifty thousand, three".