725706949 has 16 divisors (see below), whose sum is σ = 805685760. Its totient is φ = 648117360.

The previous prime is 725706941. The next prime is 725706959. The reversal of 725706949 is 949607527.

It is not a de Polignac number, because 725706949 - 2³ = 725706941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725706941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322422 + ... + 324664.

It is an arithmetic number, because the mean of its divisors is an integer number (50355360).

Almost surely, 2^725706949 is an apocalyptic number.

It is an amenable number.

725706949 is a deficient number, since it is larger than the sum of its proper divisors (79978811).

725706949 is a wasteful number, since it uses less digits than its factorization.

725706949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760.

The product of its (nonzero) digits is 952560, while the sum is 49.

The square root of 725706949 is about 26938.9485503796. The cubic root of 725706949 is about 898.6427893184.

The spelling of 725706949 in words is "seven hundred twenty-five million, seven hundred six thousand, nine hundred forty-nine".