625071677677 has 2 divisors, whose sum is σ = 625071677678. Its totient is φ = 625071677676.

The previous prime is 625071677651. The next prime is 625071677687. The reversal of 625071677677 is 776776170526.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 625065753321 + 5924356 = 790611^2 + 2434^2 .

It is a cyclic number.

It is not a de Polignac number, because 625071677677 - 2³¹ = 622924194029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625071677687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312535838838 + 312535838839.

It is an arithmetic number, because the mean of its divisors is an integer number (312535838839).

Almost surely, 2^625071677677 is an apocalyptic number.

It is an amenable number.

625071677677 is a deficient number, since it is larger than the sum of its proper divisors (1).

625071677677 is an equidigital number, since it uses as much as digits as its factorization.

625071677677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36303120, while the sum is 61.

The spelling of 625071677677 in words is "six hundred twenty-five billion, seventy-one million, six hundred seventy-seven thousand, six hundred seventy-seven".