425945642123520 has 324 divisors, whose sum is σ = 1526298130018116. Its totient is φ = 109668760535040.

The previous prime is 425945642123479. The next prime is 425945642123527. The reversal of 425945642123520 is 25321246549524.

425945642123520 is a `hidden beast` number, since 4 + 2 + 5 + 9 + 4 + 56 + 42 + 1 + 23 + 520 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 58802640850944 + 367143001272576 = 7668288^2 + 19160976^2 .

It is not an unprimeable number, because it can be changed into a prime (425945642123527) 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 35 ways as a sum of consecutive naturals, for example, 12294111 + ... + 31670750.

Almost surely, 2^{425945642123520} is an apocalyptic number.

425945642123520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425945642123520 is an abundant number, since it is smaller than the sum of its proper divisors (1100352487894596).

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

425945642123520 is a wasteful number, since it uses less digits than its factorization.

425945642123520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43964946 (or 43964900 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 54.

The spelling of 425945642123520 in words is "four hundred twenty-five trillion, nine hundred forty-five billion, six hundred forty-two million, one hundred twenty-three thousand, five hundred twenty".