25481051438 has 8 divisors (see below), whose sum is σ = 38600008920. Its totient is φ = 12614381800.

The previous prime is 25481051437. The next prime is 25481051471. The reversal of 25481051438 is 83415018452.

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

It is a super-3 number, since 3×25481051438³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25481051395 and 25481051404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25481051437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63071708 + ... + 63072111.

It is an arithmetic number, because the mean of its divisors is an integer number (4825001115).

Almost surely, 2^25481051438 is an apocalyptic number.

25481051438 is a deficient number, since it is larger than the sum of its proper divisors (13118957482).

25481051438 is a wasteful number, since it uses less digits than its factorization.

25481051438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126143922.

The product of its (nonzero) digits is 153600, while the sum is 41.

The spelling of 25481051438 in words is "twenty-five billion, four hundred eighty-one million, fifty-one thousand, four hundred thirty-eight".