625050561 has 4 divisors (see below), whose sum is σ = 833400752. Its totient is φ = 416700372.

The previous prime is 625050539. The next prime is 625050589. The reversal of 625050561 is 165050526.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 625050561 - 2⁵ = 625050529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (625050511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104175091 + ... + 104175096.

It is an arithmetic number, because the mean of its divisors is an integer number (208350188).

Almost surely, 2^625050561 is an apocalyptic number.

It is an amenable number.

625050561 is a deficient number, since it is larger than the sum of its proper divisors (208350191).

625050561 is a wasteful number, since it uses less digits than its factorization.

625050561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208350190.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 625050561 is about 25001.0111995495. The cubic root of 625050561 is about 855.0110282084.

The spelling of 625050561 in words is "six hundred twenty-five million, fifty thousand, five hundred sixty-one".