52400525 has 12 divisors (see below), whose sum is σ = 66043764. Its totient is φ = 41232000.

The previous prime is 52400521. The next prime is 52400527. The reversal of 52400525 is 52500425.

It can be written as a sum of positive squares in 6 ways, for example, as 3694084 + 48706441 = 1922^2 + 6979^2 .

It is not a de Polignac number, because 52400525 - 2² = 52400521 is a prime.

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 52400525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52400521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15656 + ... + 18705.

It is an arithmetic number, because the mean of its divisors is an integer number (5503647).

Almost surely, 2^52400525 is an apocalyptic number.

It is an amenable number.

52400525 is a deficient number, since it is larger than the sum of its proper divisors (13643239).

52400525 is a wasteful number, since it uses less digits than its factorization.

52400525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34432 (or 34427 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 52400525 is about 7238.8206912452. The cubic root of 52400525 is about 374.2069760018.

It can be divided in two parts, 52400 and 525, that added together give a palindrome (52925).

The spelling of 52400525 in words is "fifty-two million, four hundred thousand, five hundred twenty-five".