651825797 has 4 divisors (see below), whose sum is σ = 744943776. Its totient is φ = 558707820.

The previous prime is 651825793. The next prime is 651825827. The reversal of 651825797 is 797528156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 651825797 - 2² = 651825793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651825791) 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 3 ways as a sum of consecutive naturals, for example, 46558979 + ... + 46558992.

It is an arithmetic number, because the mean of its divisors is an integer number (186235944).

Almost surely, 2^651825797 is an apocalyptic number.

It is an amenable number.

651825797 is a deficient number, since it is larger than the sum of its proper divisors (93117979).

651825797 is an equidigital number, since it uses as much as digits as its factorization.

651825797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93117978.

The product of its digits is 1058400, while the sum is 50.

The square root of 651825797 is about 25530.8792837223. The cubic root of 651825797 is about 867.0494121236.

The spelling of 651825797 in words is "six hundred fifty-one million, eight hundred twenty-five thousand, seven hundred ninety-seven".