451925640 has 96 divisors (see below), whose sum is σ = 1546084800. Its totient is φ = 114168960.

The previous prime is 451925629. The next prime is 451925641. The reversal of 451925640 is 46529154.

451925640 is a `hidden beast` number, since 4 + 5 + 1 + 9 + 2 + 5 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 451925595 and 451925604.

It is not an unprimeable number, because it can be changed into a prime (451925641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26196 + ... + 39875.

It is an arithmetic number, because the mean of its divisors is an integer number (16105050).

Almost surely, 2^451925640 is an apocalyptic number.

451925640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451925640 is an abundant number, since it is smaller than the sum of its proper divisors (1094159160).

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

451925640 is a wasteful number, since it uses less digits than its factorization.

451925640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66107 (or 66100 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 451925640 is about 21258.5427534438. The cubic root of 451925640 is about 767.4009407178.

The spelling of 451925640 in words is "four hundred fifty-one million, nine hundred twenty-five thousand, six hundred forty".