725643463406 has 16 divisors (see below), whose sum is σ = 1109251485504. Its totient is φ = 355896045024.

The previous prime is 725643463403. The next prime is 725643463439. The reversal of 725643463406 is 604364346527.

It is a super-2 number, since 2×725643463406² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725643463403) 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, 293861 + ... + 1240016.

It is an arithmetic number, because the mean of its divisors is an integer number (69328217844).

Almost surely, 2^725643463406 is an apocalyptic number.

725643463406 is a deficient number, since it is larger than the sum of its proper divisors (383608022098).

725643463406 is a wasteful number, since it uses less digits than its factorization.

725643463406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538395.

The product of its (nonzero) digits is 8709120, while the sum is 50.

The spelling of 725643463406 in words is "seven hundred twenty-five billion, six hundred forty-three million, four hundred sixty-three thousand, four hundred six".