25443040451 has 8 divisors (see below), whose sum is σ = 26214373440. Its totient is φ = 24682495552.

The previous prime is 25443040439. The next prime is 25443040487. The reversal of 25443040451 is 15404034452.

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 25443040451 - 2⁶ = 25443040387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25443040421) 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, 2692235 + ... + 2701668.

It is an arithmetic number, because the mean of its divisors is an integer number (3276796680).

Almost surely, 2^25443040451 is an apocalyptic number.

25443040451 is a deficient number, since it is larger than the sum of its proper divisors (771332989).

25443040451 is an equidigital number, since it uses as much as digits as its factorization.

25443040451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5394045.

The product of its (nonzero) digits is 38400, while the sum is 32.

The spelling of 25443040451 in words is "twenty-five billion, four hundred forty-three million, forty thousand, four hundred fifty-one".