625320149 has 2 divisors, whose sum is σ = 625320150. Its totient is φ = 625320148.

The previous prime is 625320131. The next prime is 625320203. The reversal of 625320149 is 941023526.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 608362225 + 16957924 = 24665^2 + 4118^2 .

It is a cyclic number.

It is not a de Polignac number, because 625320149 - 2¹² = 625316053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625320349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312660074 + 312660075.

It is an arithmetic number, because the mean of its divisors is an integer number (312660075).

Almost surely, 2^625320149 is an apocalyptic number.

It is an amenable number.

625320149 is a deficient number, since it is larger than the sum of its proper divisors (1).

625320149 is an equidigital number, since it uses as much as digits as its factorization.

625320149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 625320149 is about 25006.4021602469. The cubic root of 625320149 is about 855.1339343094.

The spelling of 625320149 in words is "six hundred twenty-five million, three hundred twenty thousand, one hundred forty-nine".