725820556749 has 8 divisors (see below), whose sum is σ = 968438926560. Its totient is φ = 483541279056.

The previous prime is 725820556619. The next prime is 725820556759. The reversal of 725820556749 is 947655028527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 725820556749 - 2¹⁶ = 725820491213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 725820556692 and 725820556701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725820556759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84768034 + ... + 84776595.

It is an arithmetic number, because the mean of its divisors is an integer number (121054865820).

Almost surely, 2^725820556749 is an apocalyptic number.

It is an amenable number.

725820556749 is a deficient number, since it is larger than the sum of its proper divisors (242618369811).

725820556749 is a wasteful number, since it uses less digits than its factorization.

725820556749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169546059.

The product of its (nonzero) digits is 42336000, while the sum is 60.

The spelling of 725820556749 in words is "seven hundred twenty-five billion, eight hundred twenty million, five hundred fifty-six thousand, seven hundred forty-nine".