651264025 has 36 divisors (see below), whose sum is σ = 842453148. Its totient is φ = 499322880.

The previous prime is 651264017. The next prime is 651264037. The reversal of 651264025 is 520462156.

It can be written as a sum of positive squares in 6 ways, for example, as 37810201 + 613453824 = 6149^2 + 24768^2 .

It is not a de Polignac number, because 651264025 - 2³ = 651264017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3374329 + ... + 3374521.

Almost surely, 2^651264025 is an apocalyptic number.

It is an amenable number.

651264025 is a deficient number, since it is larger than the sum of its proper divisors (191189123).

651264025 is a wasteful number, since it uses less digits than its factorization.

651264025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 651264025 is about 25519.8750976567. The cubic root of 651264025 is about 866.8002534876.

The spelling of 651264025 in words is "six hundred fifty-one million, two hundred sixty-four thousand, twenty-five".