725403626345 has 8 divisors (see below), whose sum is σ = 870913385160. Its totient is φ = 580036878720.

The previous prime is 725403626317. The next prime is 725403626407. The reversal of 725403626345 is 543626304527.

It can be written as a sum of positive squares in 4 ways, for example, as 465152644441 + 260250981904 = 682021^2 + 510148^2 .

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

It is not a de Polignac number, because 725403626345 - 2¹⁰ = 725403625321 is a prime.

It is a super-2 number, since 2×725403626345² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 725403626345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35741636 + ... + 35761925.

It is an arithmetic number, because the mean of its divisors is an integer number (108864173145).

Almost surely, 2^725403626345 is an apocalyptic number.

It is an amenable number.

725403626345 is a deficient number, since it is larger than the sum of its proper divisors (145509758815).

725403626345 is a wasteful number, since it uses less digits than its factorization.

725403626345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71505595.

The product of its (nonzero) digits is 3628800, while the sum is 47.

The spelling of 725403626345 in words is "seven hundred twenty-five billion, four hundred three million, six hundred twenty-six thousand, three hundred forty-five".