6423406450625 has 40 divisors (see below), whose sum is σ = 8219240251200. Its totient is φ = 5016427416000.

The previous prime is 6423406450621. The next prime is 6423406450663. The reversal of 6423406450625 is 5260546043246.

It is not a de Polignac number, because 6423406450625 - 2² = 6423406450621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6423406450625.

It is not an unprimeable number, because it can be changed into a prime (6423406450621) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6104654 + ... + 7079096.

It is an arithmetic number, because the mean of its divisors is an integer number (205481006280).

Almost surely, 2^{6423406450625} is an apocalyptic number.

It is an amenable number.

6423406450625 is a deficient number, since it is larger than the sum of its proper divisors (1795833800575).

6423406450625 is an equidigital number, since it uses as much as digits as its factorization.

6423406450625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974715 (or 974700 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 47.

The spelling of 6423406450625 in words is "six trillion, four hundred twenty-three billion, four hundred six million, four hundred fifty thousand, six hundred twenty-five".