16464025 has 12 divisors (see below), whose sum is σ = 21120300. Its totient is φ = 12716480.

The previous prime is 16464023. The next prime is 16464031. The reversal of 16464025 is 52046461.

It can be written as a sum of positive squares in 6 ways, for example, as 3640464 + 12823561 = 1908^2 + 3581^2 .

It is not a de Polignac number, because 16464025 - 2¹ = 16464023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16463984 and 16464002.

It is not an unprimeable number, because it can be changed into a prime (16464023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10630 + ... + 12079.

It is an arithmetic number, because the mean of its divisors is an integer number (1760025).

Almost surely, 2^16464025 is an apocalyptic number.

It is an amenable number.

16464025 is a deficient number, since it is larger than the sum of its proper divisors (4656275).

16464025 is a wasteful number, since it uses less digits than its factorization.

16464025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22748 (or 22743 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 16464025 is about 4057.5885695817. The cubic root of 16464025 is about 254.3970117606.

It can be divided in two parts, 1646 and 4025, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 16464025 in words is "sixteen million, four hundred sixty-four thousand, twenty-five".