620446025 has 12 divisors (see below), whose sum is σ = 814609692. Its totient is φ = 467159040.

The previous prime is 620446019. The next prime is 620446051. The reversal of 620446025 is 520644026.

It can be written as a sum of positive squares in 6 ways, for example, as 635209 + 619810816 = 797^2 + 24896^2 .

It is not a de Polignac number, because 620446025 - 2⁴ = 620446009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 729512 + ... + 730361.

It is an arithmetic number, because the mean of its divisors is an integer number (67884141).

Almost surely, 2^620446025 is an apocalyptic number.

It is an amenable number.

620446025 is a deficient number, since it is larger than the sum of its proper divisors (194163667).

620446025 is a wasteful number, since it uses less digits than its factorization.

620446025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459900 (or 1459895 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 620446025 is about 24908.7539832887. The cubic root of 620446025 is about 852.9063258545.

The spelling of 620446025 in words is "six hundred twenty million, four hundred forty-six thousand, twenty-five".