6405110125 has 8 divisors (see below), whose sum is σ = 7993577592. Its totient is φ = 5124088000.

The previous prime is 6405110093. The next prime is 6405110137. The reversal of 6405110125 is 5210115046.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1211457636 + 5193652489 = 34806^2 + 72067^2 .

It is not a de Polignac number, because 6405110125 - 2⁵ = 6405110093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6405110125.

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, 25620316 + ... + 25620565.

It is an arithmetic number, because the mean of its divisors is an integer number (999197199).

Almost surely, 2^6405110125 is an apocalyptic number.

It is an amenable number.

6405110125 is a deficient number, since it is larger than the sum of its proper divisors (1588467467).

6405110125 is an equidigital number, since it uses as much as digits as its factorization.

6405110125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51240896 (or 51240886 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 6405110125 is about 80031.9319084576. The cubic root of 6405110125 is about 1857.1295498835.

The spelling of 6405110125 in words is "six billion, four hundred five million, one hundred ten thousand, one hundred twenty-five".