625444828641 has 16 divisors (see below), whose sum is σ = 981089928000. Its totient is φ = 392435970624.

The previous prime is 625444828609. The next prime is 625444828643. The reversal of 625444828641 is 146828444526.

625444828641 is a `hidden beast` number, since 6 + 2 + 5 + 44 + 482 + 86 + 41 = 666.

It is not a de Polignac number, because 625444828641 - 2⁵ = 625444828609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625444828643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681311991 + ... + 681312908.

It is an arithmetic number, because the mean of its divisors is an integer number (61318120500).

Almost surely, 2^625444828641 is an apocalyptic number.

It is an amenable number.

625444828641 is a deficient number, since it is larger than the sum of its proper divisors (355645099359).

625444828641 is a wasteful number, since it uses less digits than its factorization.

625444828641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362624925 (or 1362624919 counting only the distinct ones).

The product of its digits is 11796480, while the sum is 54.

The spelling of 625444828641 in words is "six hundred twenty-five billion, four hundred forty-four million, eight hundred twenty-eight thousand, six hundred forty-one".