6465880025 has 108 divisors (see below), whose sum is σ = 9651382272. Its totient is φ = 4288680000.

The previous prime is 6465880009. The next prime is 6465880039. The reversal of 6465880025 is 5200885646.

It is not a de Polignac number, because 6465880025 - 2⁴ = 6465880009 is a prime.

It is an unprimeable number.

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 107 ways as a sum of consecutive naturals, for example, 33852680 + ... + 33852870.

Almost surely, 2^6465880025 is an apocalyptic number.

It is an amenable number.

6465880025 is a deficient number, since it is larger than the sum of its proper divisors (3185502247).

6465880025 is a wasteful number, since it uses less digits than its factorization.

6465880025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The square root of 6465880025 is about 80410.6959614205. The cubic root of 6465880025 is about 1862.9843816204.

The spelling of 6465880025 in words is "six billion, four hundred sixty-five million, eight hundred eighty thousand, twenty-five".