451025240 has 32 divisors (see below), whose sum is σ = 1029959280. Its totient is φ = 177716352.

The previous prime is 451025219. The next prime is 451025243. The reversal of 451025240 is 42520154.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451025243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81467 + ... + 86826.

Almost surely, 2^451025240 is an apocalyptic number.

451025240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451025240 is an abundant number, since it is smaller than the sum of its proper divisors (578934040).

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

451025240 is a wasteful number, since it uses less digits than its factorization.

451025240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168371 (or 168367 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 451025240 is about 21237.3548258723. The cubic root of 451025240 is about 766.8909547521.

Adding to 451025240 its reverse (42520154), we get a palindrome (493545394).

The spelling of 451025240 in words is "four hundred fifty-one million, twenty-five thousand, two hundred forty".