726647025 has 96 divisors (see below), whose sum is σ = 1342914048. Its totient is φ = 344448000.

The previous prime is 726647023. The next prime is 726647029. The reversal of 726647025 is 520746627.

It is a happy number.

It is not a de Polignac number, because 726647025 - 2¹ = 726647023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (726647021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4628247 + ... + 4628403.

It is an arithmetic number, because the mean of its divisors is an integer number (13988688).

Almost surely, 2^726647025 is an apocalyptic number.

726647025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

726647025 is a deficient number, since it is larger than the sum of its proper divisors (616267023).

726647025 is a wasteful number, since it uses less digits than its factorization.

726647025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 726647025 is about 26956.3911716684. The cubic root of 726647025 is about 899.0306538702.

The spelling of 726647025 in words is "seven hundred twenty-six million, six hundred forty-seven thousand, twenty-five".