625546222949 has 2 divisors, whose sum is σ = 625546222950. Its totient is φ = 625546222948.

The previous prime is 625546222877. The next prime is 625546223011. The reversal of 625546222949 is 949222645526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355910082724 + 269636140225 = 596582^2 + 519265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625546222949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 625546222894 and 625546222903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625546222349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312773111474 + 312773111475.

It is an arithmetic number, because the mean of its divisors is an integer number (312773111475).

Almost surely, 2^625546222949 is an apocalyptic number.

It is an amenable number.

625546222949 is a deficient number, since it is larger than the sum of its proper divisors (1).

625546222949 is an equidigital number, since it uses as much as digits as its factorization.

625546222949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18662400, while the sum is 56.

The spelling of 625546222949 in words is "six hundred twenty-five billion, five hundred forty-six million, two hundred twenty-two thousand, nine hundred forty-nine".