21024325245 has 64 divisors (see below), whose sum is σ = 42014453760. Its totient is φ = 8721753600.

The previous prime is 21024325123. The next prime is 21024325297. The reversal of 21024325245 is 54252342012.

It is not a de Polignac number, because 21024325245 - 2⁸ = 21024324989 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 641200 + ... + 673190.

It is an arithmetic number, because the mean of its divisors is an integer number (656475840).

Almost surely, 2^21024325245 is an apocalyptic number.

It is an amenable number.

21024325245 is a deficient number, since it is larger than the sum of its proper divisors (20990128515).

21024325245 is a wasteful number, since it uses less digits than its factorization.

21024325245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32586.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 21024325245 its reverse (54252342012), we get a palindrome (75276667257).

The spelling of 21024325245 in words is "twenty-one billion, twenty-four million, three hundred twenty-five thousand, two hundred forty-five".