451021325 has 18 divisors (see below), whose sum is σ = 577920042. Its totient is φ = 349159200.

The previous prime is 451021321. The next prime is 451021327. The reversal of 451021325 is 523120154.

It can be written as a sum of positive squares in 3 ways, for example, as 156075049 + 294946276 = 12493^2 + 17174^2 .

It is not a de Polignac number, because 451021325 - 2² = 451021321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 451021325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451021321) 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, 14639 + ... + 33411.

It is an arithmetic number, because the mean of its divisors is an integer number (32106669).

Almost surely, 2^451021325 is an apocalyptic number.

It is an amenable number.

451021325 is a deficient number, since it is larger than the sum of its proper divisors (126898717).

451021325 is a wasteful number, since it uses less digits than its factorization.

451021325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18845 (or 18809 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 451021325 is about 21237.2626531764. The cubic root of 451021325 is about 766.8887358173. Note that the first 3 decimals are identical.

Adding to 451021325 its reverse (523120154), we get a palindrome (974141479).

The spelling of 451021325 in words is "four hundred fifty-one million, twenty-one thousand, three hundred twenty-five".