725241357043621 has 24 divisors (see below), whose sum is σ = 798001815022272. Its totient is φ = 658619248425600.

The previous prime is 725241357043559. The next prime is 725241357043657. The reversal of 725241357043621 is 126340753142527.

It is not a de Polignac number, because 725241357043621 - 2²³ = 725241348655013 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 (725241357043421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1639880301 + ... + 1640322493.

It is an arithmetic number, because the mean of its divisors is an integer number (33250075625928).

Almost surely, 2^{725241357043621} is an apocalyptic number.

It is an amenable number.

725241357043621 is a deficient number, since it is larger than the sum of its proper divisors (72760457978651).

725241357043621 is a wasteful number, since it uses less digits than its factorization.

725241357043621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456393 (or 456382 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 52.

The spelling of 725241357043621 in words is "seven hundred twenty-five trillion, two hundred forty-one billion, three hundred fifty-seven million, forty-three thousand, six hundred twenty-one".