725786641 has 4 divisors (see below), whose sum is σ = 726796800. Its totient is φ = 724776484.

The previous prime is 725786629. The next prime is 725786653. The reversal of 725786641 is 146687527.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (725786629) and next prime (725786653).

It is a cyclic number.

It is not a de Polignac number, because 725786641 - 2⁹ = 725786129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725786591 and 725786600.

It is not an unprimeable number, because it can be changed into a prime (723786641) 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, 504001 + ... + 505438.

It is an arithmetic number, because the mean of its divisors is an integer number (181699200).

Almost surely, 2^725786641 is an apocalyptic number.

It is an amenable number.

725786641 is a deficient number, since it is larger than the sum of its proper divisors (1010159).

725786641 is a wasteful number, since it uses less digits than its factorization.

725786641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010158.

The product of its digits is 564480, while the sum is 46.

The square root of 725786641 is about 26940.4276320923. The cubic root of 725786641 is about 898.6756823110.

The spelling of 725786641 in words is "seven hundred twenty-five million, seven hundred eighty-six thousand, six hundred forty-one".