4125020064640 has 64 divisors (see below), whose sum is σ = 9862532375760. Its totient is φ = 1649814556672.

The previous prime is 4125020064631. The next prime is 4125020064647. The reversal of 4125020064640 is 464600205214.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 4125020064596 and 4125020064605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4125020064647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5147724 + ... + 5894836.

Almost surely, 2^{4125020064640} is an apocalyptic number.

4125020064640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4125020064640 is an abundant number, since it is smaller than the sum of its proper divisors (5737512311120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4125020064640 is an equidigital number, since it uses as much as digits as its factorization.

4125020064640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755759 (or 755747 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 4125020064640 its reverse (464600205214), we get a palindrome (4589620269854).

The spelling of 4125020064640 in words is "four trillion, one hundred twenty-five billion, twenty million, sixty-four thousand, six hundred forty".