725770663 has 4 divisors (see below), whose sum is σ = 741212640. Its totient is φ = 710328688.

The previous prime is 725770631. The next prime is 725770679. The reversal of 725770663 is 366077527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 725770663 - 2⁵ = 725770631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725770163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7720918 + ... + 7721011.

It is an arithmetic number, because the mean of its divisors is an integer number (185303160).

Almost surely, 2^725770663 is an apocalyptic number.

725770663 is a deficient number, since it is larger than the sum of its proper divisors (15441977).

725770663 is a wasteful number, since it uses less digits than its factorization.

725770663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15441976.

The product of its (nonzero) digits is 370440, while the sum is 43.

The square root of 725770663 is about 26940.1310872832. The cubic root of 725770663 is about 898.6690875605.

The spelling of 725770663 in words is "seven hundred twenty-five million, seven hundred seventy thousand, six hundred sixty-three".