725272355340 has 72 divisors (see below), whose sum is σ = 2369223035088. Its totient is φ = 178528579200.

The previous prime is 725272355329. The next prime is 725272355369. The reversal of 725272355340 is 43553272527.

It is a happy number.

725272355340 is a `hidden beast` number, since 7 + 2 + 5 + 272 + 35 + 5 + 340 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154970386 + ... + 154975065.

Almost surely, 2^725272355340 is an apocalyptic number.

It is an amenable number.

725272355340 is an abundant number, since it is smaller than the sum of its proper divisors (1643950679748).

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

725272355340 is a wasteful number, since it uses less digits than its factorization.

725272355340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309945479 (or 309945474 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 45.

The spelling of 725272355340 in words is "seven hundred twenty-five billion, two hundred seventy-two million, three hundred fifty-five thousand, three hundred forty".