725436500 has 24 divisors (see below), whose sum is σ = 1584354408. Its totient is φ = 290174400.

The previous prime is 725436499. The next prime is 725436521. The reversal of 725436500 is 5634527.

It can be written as a sum of positive squares in 4 ways, for example, as 63712324 + 661724176 = 7982^2 + 25724^2 .

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, 724937 + ... + 725936.

It is an arithmetic number, because the mean of its divisors is an integer number (66014767).

Almost surely, 2^725436500 is an apocalyptic number.

It is an amenable number.

725436500 is an abundant number, since it is smaller than the sum of its proper divisors (858917908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725436500 is a wasteful number, since it uses less digits than its factorization.

725436500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450892 (or 1450880 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 725436500 is about 26933.9284175183. The cubic root of 725436500 is about 898.5311431316.

The spelling of 725436500 in words is "seven hundred twenty-five million, four hundred thirty-six thousand, five hundred".