625540051464666 has 64 divisors (see below), whose sum is σ = 1405945675911168. Its totient is φ = 184098932664768.

The previous prime is 625540051464617. The next prime is 625540051464667. The reversal of 625540051464666 is 666464150045526.

It is not an unprimeable number, because it can be changed into a prime (625540051464667) 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, 44784655 + ... + 57067901.

It is an arithmetic number, because the mean of its divisors is an integer number (21967901186112).

Almost surely, 2^{625540051464666} is an apocalyptic number.

625540051464666 is an abundant number, since it is smaller than the sum of its proper divisors (780405624446502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

625540051464666 is a wasteful number, since it uses less digits than its factorization.

625540051464666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12311675.

The product of its (nonzero) digits is 124416000, while the sum is 60.

The spelling of 625540051464666 in words is "six hundred twenty-five trillion, five hundred forty billion, fifty-one million, four hundred sixty-four thousand, six hundred sixty-six".