620863425 has 72 divisors (see below), whose sum is σ = 1368704064. Its totient is φ = 261982080.

The previous prime is 620863423. The next prime is 620863433. The reversal of 620863425 is 524368026.

620863425 is a `hidden beast` number, since 620 + 8 + 6 + 3 + 4 + 25 = 666.

It is not a de Polignac number, because 620863425 - 2¹ = 620863423 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 620863425.

It is not an unprimeable number, because it can be changed into a prime (620863421) 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 71 ways as a sum of consecutive naturals, for example, 5314 + ... + 35636.

Almost surely, 2^620863425 is an apocalyptic number.

620863425 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

620863425 is an abundant number, since it is smaller than the sum of its proper divisors (747840639).

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

620863425 is a wasteful number, since it uses less digits than its factorization.

620863425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30359 (or 30351 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 620863425 is about 24917.1311550909. The cubic root of 620863425 is about 853.0975449040.

The spelling of 620863425 in words is "six hundred twenty million, eight hundred sixty-three thousand, four hundred twenty-five".