16407629825 has 6 divisors (see below), whose sum is σ = 20345461014. Its totient is φ = 13126103840.

The previous prime is 16407629803. The next prime is 16407629857. The reversal of 16407629825 is 52892670461.

It can be written as a sum of positive squares in 3 ways, for example, as 3983629456 + 12424000369 = 63116^2 + 111463^2 .

It is not a de Polignac number, because 16407629825 - 2¹⁴ = 16407613441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 328152572 + ... + 328152621.

It is an arithmetic number, because the mean of its divisors is an integer number (3390910169).

Almost surely, 2^16407629825 is an apocalyptic number.

It is an amenable number.

16407629825 is a deficient number, since it is larger than the sum of its proper divisors (3937831189).

16407629825 is an equidigital number, since it uses as much as digits as its factorization.

16407629825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656305203 (or 656305198 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 16407629825 in words is "sixteen billion, four hundred seven million, six hundred twenty-nine thousand, eight hundred twenty-five".