16464053405025 has 18 divisors (see below), whose sum is σ = 29488948988070. Its totient is φ = 8780828482560.

The previous prime is 16464053404979. The next prime is 16464053405029. The reversal of 16464053405025 is 52050435046461.

16464053405025 is a `hidden beast` number, since 1 + 6 + 4 + 6 + 40 + 534 + 0 + 50 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 2421886050081 + 14042167354944 = 1556241^2 + 3747288^2 .

It is not a de Polignac number, because 16464053405025 - 2¹² = 16464053400929 is a prime.

It is a super-4 number, since 4×16464053405025⁴ (a number of 54 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (16464053405029) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36586785120 + ... + 36586785569.

Almost surely, 2^{16464053405025} is an apocalyptic number.

16464053405025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16464053405025 is a deficient number, since it is larger than the sum of its proper divisors (13024895583045).

16464053405025 is a wasteful number, since it uses less digits than its factorization.

16464053405025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73173570705 (or 73173570697 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 16464053405025 in words is "sixteen trillion, four hundred sixty-four billion, fifty-three million, four hundred five thousand, twenty-five".