630531425 has 12 divisors (see below), whose sum is σ = 782983740. Its totient is φ = 503699520.

The previous prime is 630531409. The next prime is 630531431. The reversal of 630531425 is 524135036.

It can be written as a sum of positive squares in 6 ways, for example, as 162588001 + 467943424 = 12751^2 + 21632^2 .

It is not a de Polignac number, because 630531425 - 2⁴ = 630531409 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 62 + ... + 35511.

It is an arithmetic number, because the mean of its divisors is an integer number (65248645).

Almost surely, 2^630531425 is an apocalyptic number.

It is an amenable number.

630531425 is a deficient number, since it is larger than the sum of its proper divisors (152452315).

630531425 is a wasteful number, since it uses less digits than its factorization.

630531425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36292 (or 36287 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 630531425 is about 25110.3848039014. The cubic root of 630531425 is about 857.5028630265.

The spelling of 630531425 in words is "six hundred thirty million, five hundred thirty-one thousand, four hundred twenty-five".