725666654 has 16 divisors (see below), whose sum is σ = 1099677600. Its totient is φ = 359124960.

The previous prime is 725666611. The next prime is 725666659. The reversal of 725666654 is 456666527.

It is a happy number.

725666654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 725666599 and 725666608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725666659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83159 + ... + 91469.

It is an arithmetic number, because the mean of its divisors is an integer number (68729850).

Almost surely, 2^725666654 is an apocalyptic number.

725666654 is a deficient number, since it is larger than the sum of its proper divisors (374010946).

725666654 is a wasteful number, since it uses less digits than its factorization.

725666654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8755.

The product of its digits is 1814400, while the sum is 47.

The square root of 725666654 is about 26938.2006451804. The cubic root of 725666654 is about 898.6261565801.

The spelling of 725666654 in words is "seven hundred twenty-five million, six hundred sixty-six thousand, six hundred fifty-four".