25451043213 has 8 divisors (see below), whose sum is σ = 35930884608. Its totient is φ = 15969281984.

The previous prime is 25451043209. The next prime is 25451043259. The reversal of 25451043213 is 31234015452.

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

It is a cyclic number.

It is not a de Polignac number, because 25451043213 - 2² = 25451043209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25451043113) 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, 249519981 + ... + 249520082.

It is an arithmetic number, because the mean of its divisors is an integer number (4491360576).

Almost surely, 2^25451043213 is an apocalyptic number.

It is an amenable number.

25451043213 is a deficient number, since it is larger than the sum of its proper divisors (10479841395).

25451043213 is a wasteful number, since it uses less digits than its factorization.

25451043213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499040083.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 25451043213 its reverse (31234015452), we get a palindrome (56685058665).

The spelling of 25451043213 in words is "twenty-five billion, four hundred fifty-one million, forty-three thousand, two hundred thirteen".