725500052 has 6 divisors (see below), whose sum is σ = 1269625098. Its totient is φ = 362750024.

The previous prime is 725500031. The next prime is 725500091. The reversal of 725500052 is 250005527.

It can be written as a sum of positive squares in only one way, i.e., 410224516 + 315275536 = 20254^2 + 17756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 725499994 and 725500030.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90687503 + ... + 90687510.

It is an arithmetic number, because the mean of its divisors is an integer number (211604183).

Almost surely, 2^725500052 is an apocalyptic number.

It is an amenable number.

725500052 is a deficient number, since it is larger than the sum of its proper divisors (544125046).

725500052 is a wasteful number, since it uses less digits than its factorization.

725500052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181375017 (or 181375015 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 725500052 is about 26935.1081675942. The cubic root of 725500052 is about 898.5573810283.

Adding to 725500052 its reverse (250005527), we get a palindrome (975505579).

The spelling of 725500052 in words is "seven hundred twenty-five million, five hundred thousand, fifty-two".