651257070025 has 27 divisors (see below), whose sum is σ = 815996000871. Its totient is φ = 515618090640.

The previous prime is 651257069977. The next prime is 651257070029. The reversal of 651257070025 is 520070752156.

The square root of 651257070025 is 807005.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 234452545209 + 416804524816 = 484203^2 + 645604^2 .

It is not a de Polignac number, because 651257070025 - 2⁹ = 651257069513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 651257070025.

It is not an unprimeable number, because it can be changed into a prime (651257070029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 415606792 + ... + 415608358.

Almost surely, 2^651257070025 is an apocalyptic number.

651257070025 is the 807005-th square number.

651257070025 is the 403503-rd centered octagonal number.

It is an amenable number.

651257070025 is a deficient number, since it is larger than the sum of its proper divisors (164738930846).

651257070025 is an frugal number, since it uses more digits than its factorization.

651257070025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350 (or 1675 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 40.

The spelling of 651257070025 in words is "six hundred fifty-one billion, two hundred fifty-seven million, seventy thousand, twenty-five".