25423524321 has 8 divisors (see below), whose sum is σ = 36505573440. Its totient is φ = 15645245712.

The previous prime is 25423524251. The next prime is 25423524349. The reversal of 25423524321 is 12342532452.

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

It is not a de Polignac number, because 25423524321 - 2⁷ = 25423524193 is a prime.

It is a super-2 number, since 2×25423524321² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25423524521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325942581 + ... + 325942658.

It is an arithmetic number, because the mean of its divisors is an integer number (4563196680).

Almost surely, 2^25423524321 is an apocalyptic number.

It is an amenable number.

25423524321 is a deficient number, since it is larger than the sum of its proper divisors (11082049119).

25423524321 is a wasteful number, since it uses less digits than its factorization.

25423524321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651885255.

The product of its digits is 57600, while the sum is 33.

The spelling of 25423524321 in words is "twenty-five billion, four hundred twenty-three million, five hundred twenty-four thousand, three hundred twenty-one".