625101480269821 has 2 divisors, whose sum is σ = 625101480269822. Its totient is φ = 625101480269820.

The previous prime is 625101480269809. The next prime is 625101480269933. The reversal of 625101480269821 is 128962084101526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 620158910940100 + 4942569329721 = 24902990^2 + 2223189^2 .

It is a cyclic number.

It is not a de Polignac number, because 625101480269821 - 2⁴¹ = 622902457014269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625101480669821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312550740134910 + 312550740134911.

It is an arithmetic number, because the mean of its divisors is an integer number (312550740134911).

Almost surely, 2^{625101480269821} is an apocalyptic number.

It is an amenable number.

625101480269821 is a deficient number, since it is larger than the sum of its proper divisors (1).

625101480269821 is an equidigital number, since it uses as much as digits as its factorization.

625101480269821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 625101480269821 in words is "six hundred twenty-five trillion, one hundred one billion, four hundred eighty million, two hundred sixty-nine thousand, eight hundred twenty-one".