625050109 has 2 divisors, whose sum is σ = 625050110. Its totient is φ = 625050108.

The previous prime is 625050091. The next prime is 625050113. The reversal of 625050109 is 901050526.

Together with previous prime (625050091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 444282084 + 180768025 = 21078^2 + 13445^2 .

It is a cyclic number.

It is not a de Polignac number, because 625050109 - 2⁹ = 625049597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625050149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312525054 + 312525055.

It is an arithmetic number, because the mean of its divisors is an integer number (312525055).

Almost surely, 2^625050109 is an apocalyptic number.

It is an amenable number.

625050109 is a deficient number, since it is larger than the sum of its proper divisors (1).

625050109 is an equidigital number, since it uses as much as digits as its factorization.

625050109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 625050109 is about 25001.0021599135. The cubic root of 625050109 is about 855.0108221103.

The spelling of 625050109 in words is "six hundred twenty-five million, fifty thousand, one hundred nine".