52400400425 has 6 divisors (see below), whose sum is σ = 64976496558. Its totient is φ = 41920320320.

The previous prime is 52400400421. The next prime is 52400400431.

52400400425 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 3 ways, for example, as 1257482521 + 51142917904 = 35461^2 + 226148^2 .

It is not a de Polignac number, because 52400400425 - 2² = 52400400421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52400400394 and 52400400403.

It is not an unprimeable number, because it can be changed into a prime (52400400421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1048007984 + ... + 1048008033.

It is an arithmetic number, because the mean of its divisors is an integer number (10829416093).

Almost surely, 2^52400400425 is an apocalyptic number.

It is an amenable number.

52400400425 is a deficient number, since it is larger than the sum of its proper divisors (12576096133).

52400400425 is a wasteful number, since it uses less digits than its factorization.

52400400425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096016027 (or 2096016022 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The spelling of 52400400425 in words is "fifty-two billion, four hundred million, four hundred thousand, four hundred twenty-five".