25544134004 has 24 divisors (see below), whose sum is σ = 45768455040. Its totient is φ = 12467778624.

The previous prime is 25544133997. The next prime is 25544134039. The reversal of 25544134004 is 40043144552.

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, 259157 + ... + 343875.

It is an arithmetic number, because the mean of its divisors is an integer number (1907018960).

Almost surely, 2^25544134004 is an apocalyptic number.

It is an amenable number.

25544134004 is a deficient number, since it is larger than the sum of its proper divisors (20224321036).

25544134004 is a wasteful number, since it uses less digits than its factorization.

25544134004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86519 (or 86517 counting only the distinct ones).

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

Adding to 25544134004 its reverse (40043144552), we get a palindrome (65587278556).

The spelling of 25544134004 in words is "twenty-five billion, five hundred forty-four million, one hundred thirty-four thousand, four".