726136725 has 48 divisors (see below), whose sum is σ = 1276793280. Its totient is φ = 362880000.

The previous prime is 726136721. The next prime is 726136751. The reversal of 726136725 is 527631627.

It is not a de Polignac number, because 726136725 - 2² = 726136721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726136721) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 318891 + ... + 321159.

It is an arithmetic number, because the mean of its divisors is an integer number (26599860).

Almost surely, 2^726136725 is an apocalyptic number.

726136725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

726136725 is a deficient number, since it is larger than the sum of its proper divisors (550656555).

726136725 is a wasteful number, since it uses less digits than its factorization.

726136725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550 (or 2545 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 726136725 is about 26946.9242215137. The cubic root of 726136725 is about 898.8201514929.

The spelling of 726136725 in words is "seven hundred twenty-six million, one hundred thirty-six thousand, seven hundred twenty-five".