725385409236 has 24 divisors (see below), whose sum is σ = 1880628839040. Its totient is φ = 241795136376.

The previous prime is 725385409187. The next prime is 725385409241. The reversal of 725385409236 is 632904583527.

725385409236 is a `hidden beast` number, since 7 + 2 + 5 + 3 + 8 + 540 + 92 + 3 + 6 = 666.

725385409236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 3358265676 + ... + 3358265891.

It is an arithmetic number, because the mean of its divisors is an integer number (78359534960).

Almost surely, 2^725385409236 is an apocalyptic number.

It is an amenable number.

725385409236 is an abundant number, since it is smaller than the sum of its proper divisors (1155243429804).

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

725385409236 is a wasteful number, since it uses less digits than its factorization.

725385409236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6716531580 (or 6716531572 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 725385409236 in words is "seven hundred twenty-five billion, three hundred eighty-five million, four hundred nine thousand, two hundred thirty-six".