4000725515648 has 32 divisors (see below), whose sum is σ = 7970530254960. Its totient is φ = 2000278706688.

The previous prime is 4000725515587. The next prime is 4000725515659. The reversal of 4000725515648 is 8465155270004.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×4000725515648³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 2459090 + ... + 3748142.

Almost surely, 2^{4000725515648} is an apocalyptic number.

It is an amenable number.

4000725515648 is a deficient number, since it is larger than the sum of its proper divisors (3969804739312).

4000725515648 is a wasteful number, since it uses less digits than its factorization.

4000725515648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313314 (or 1313302 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 47.

The spelling of 4000725515648 in words is "four trillion, seven hundred twenty-five million, five hundred fifteen thousand, six hundred forty-eight".