25423132406 has 16 divisors (see below), whose sum is σ = 43774511616. Its totient is φ = 10847628456.

The previous prime is 25423132367. The next prime is 25423132429. The reversal of 25423132406 is 60423132452.

It is a super-2 number, since 2×25423132406² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3996686 + ... + 4003041.

It is an arithmetic number, because the mean of its divisors is an integer number (2735906976).

Almost surely, 2^25423132406 is an apocalyptic number.

25423132406 is a deficient number, since it is larger than the sum of its proper divisors (18351379210).

25423132406 is a wasteful number, since it uses less digits than its factorization.

25423132406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7999963.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 25423132406 its reverse (60423132452), we get a palindrome (85846264858).

The spelling of 25423132406 in words is "twenty-five billion, four hundred twenty-three million, one hundred thirty-two thousand, four hundred six".