16434025 has 6 divisors (see below), whose sum is σ = 20378222. Its totient is φ = 13147200.

The previous prime is 16434001. The next prime is 16434049. The reversal of 16434025 is 52043461.

It is an interprime number because it is at equal distance from previous prime (16434001) and next prime (16434049).

It can be written as a sum of positive squares in 3 ways, for example, as 80089 + 16353936 = 283^2 + 4044^2 .

It is not a de Polignac number, because 16434025 - 2⁷ = 16433897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 657361 = 16434025 / (1 + 6 + 4 + 3 + 4 + 0 + 2 + 5).

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, 328656 + ... + 328705.

Almost surely, 2^16434025 is an apocalyptic number.

It is an amenable number.

16434025 is a deficient number, since it is larger than the sum of its proper divisors (3944197).

16434025 is an equidigital number, since it uses as much as digits as its factorization.

16434025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657371 (or 657366 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 16434025 is about 4053.8901070453. The cubic root of 16434025 is about 254.2424009135.

Adding to 16434025 its reverse (52043461), we get a palindrome (68477486).

The spelling of 16434025 in words is "sixteen million, four hundred thirty-four thousand, twenty-five".