725621030 has 64 divisors (see below), whose sum is σ = 1438290432. Its totient is φ = 262379520.

The previous prime is 725621027. The next prime is 725621051. The reversal of 725621030 is 30126527.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 826952 + ... + 827828.

It is an arithmetic number, because the mean of its divisors is an integer number (22473288).

Almost surely, 2^725621030 is an apocalyptic number.

725621030 is a deficient number, since it is larger than the sum of its proper divisors (712669402).

725621030 is a wasteful number, since it uses less digits than its factorization.

725621030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 725621030 is about 26937.3538047077. The cubic root of 725621030 is about 898.6073234245.

Adding to 725621030 its reverse (30126527), we get a palindrome (755747557).

The spelling of 725621030 in words is "seven hundred twenty-five million, six hundred twenty-one thousand, thirty".