451025440 has 24 divisors (see below), whose sum is σ = 1065547980. Its totient is φ = 180410112.

The previous prime is 451025413. The next prime is 451025467. The reversal of 451025440 is 44520154.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (451025413) and next prime (451025467).

It can be written as a sum of positive squares in 2 ways, for example, as 400160016 + 50865424 = 20004^2 + 7132^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1409295 + ... + 1409614.

Almost surely, 2^451025440 is an apocalyptic number.

451025440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451025440 is an abundant number, since it is smaller than the sum of its proper divisors (614522540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451025440 is a wasteful number, since it uses less digits than its factorization.

451025440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818924 (or 2818916 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 451025440 is about 21237.3595345561. The cubic root of 451025440 is about 766.8910681073.

Adding to 451025440 its reverse (44520154), we get a palindrome (495545594).

The spelling of 451025440 in words is "four hundred fifty-one million, twenty-five thousand, four hundred forty".