64625070257 has 32 divisors (see below), whose sum is σ = 75762086400. Its totient is φ = 54474451200.

The previous prime is 64625070239. The next prime is 64625070259. The reversal of 64625070257 is 75207052646.

64625070257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 64625070257 - 2⁶ = 64625070193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64625070259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3395594 + ... + 3414572.

It is an arithmetic number, because the mean of its divisors is an integer number (2367565200).

Almost surely, 2^64625070257 is an apocalyptic number.

It is an amenable number.

64625070257 is a deficient number, since it is larger than the sum of its proper divisors (11137016143).

64625070257 is a wasteful number, since it uses less digits than its factorization.

64625070257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19277.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 64625070257 in words is "sixty-four billion, six hundred twenty-five million, seventy thousand, two hundred fifty-seven".