64254660225 has 96 divisors (see below), whose sum is σ = 127046344704. Its totient is φ = 28036108800.

The previous prime is 64254660221. The next prime is 64254660227. The reversal of 64254660225 is 52206645246.

64254660225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64254660225 - 2² = 64254660221 is a prime.

It is a super-2 number, since 2×64254660225² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64254660221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1161034 + ... + 1215116.

It is an arithmetic number, because the mean of its divisors is an integer number (1323399424).

Almost surely, 2^64254660225 is an apocalyptic number.

It is an amenable number.

64254660225 is a deficient number, since it is larger than the sum of its proper divisors (62791684479).

64254660225 is a wasteful number, since it uses less digits than its factorization.

64254660225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54207 (or 54202 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 64254660225 in words is "sixty-four billion, two hundred fifty-four million, six hundred sixty thousand, two hundred twenty-five".