64253515523025 has 48 divisors (see below), whose sum is σ = 107237773896768. Its totient is φ = 33944327424000.

The previous prime is 64253515522969. The next prime is 64253515523053. The reversal of 64253515523025 is 52032551535246.

It is a happy number.

It is not a de Polignac number, because 64253515523025 - 2³⁹ = 63703759709137 is a prime.

It is a super-2 number, since 2×64253515523025² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69203865 + ... + 70126185.

It is an arithmetic number, because the mean of its divisors is an integer number (2234120289516).

Almost surely, 2^{64253515523025} is an apocalyptic number.

It is an amenable number.

64253515523025 is a deficient number, since it is larger than the sum of its proper divisors (42984258373743).

64253515523025 is a wasteful number, since it uses less digits than its factorization.

64253515523025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931122 (or 931117 counting only the distinct ones).

The product of its (nonzero) digits is 5400000, while the sum is 48.

The spelling of 64253515523025 in words is "sixty-four trillion, two hundred fifty-three billion, five hundred fifteen million, five hundred twenty-three thousand, twenty-five".