725407755 has 32 divisors (see below), whose sum is σ = 1203916608. Its totient is φ = 372672000.

The previous prime is 725407751. The next prime is 725407757. The reversal of 725407755 is 557704527.

725407755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 725407755 - 2² = 725407751 is a prime.

It is a super-2 number, since 2×725407755² = 1052432822028280050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (725407751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49585 + ... + 62525.

It is an arithmetic number, because the mean of its divisors is an integer number (37622394).

Almost surely, 2^725407755 is an apocalyptic number.

725407755 is a deficient number, since it is larger than the sum of its proper divisors (478508853).

725407755 is a wasteful number, since it uses less digits than its factorization.

725407755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13087.

The product of its (nonzero) digits is 343000, while the sum is 42.

The square root of 725407755 is about 26933.3947915965. The cubic root of 725407755 is about 898.5192750499.

The spelling of 725407755 in words is "seven hundred twenty-five million, four hundred seven thousand, seven hundred fifty-five".