625076561 has 2 divisors, whose sum is σ = 625076562. Its totient is φ = 625076560.

The previous prime is 625076539. The next prime is 625076597. The reversal of 625076561 is 165670526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 602457025 + 22619536 = 24545^2 + 4756^2 .

It is a cyclic number.

It is not a de Polignac number, because 625076561 - 2¹⁸ = 624814417 is a prime.

It is a super-2 number, since 2×625076561² = 781441414223173442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (625076461) 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, 312538280 + 312538281.

It is an arithmetic number, because the mean of its divisors is an integer number (312538281).

Almost surely, 2^625076561 is an apocalyptic number.

It is an amenable number.

625076561 is a deficient number, since it is larger than the sum of its proper divisors (1).

625076561 is an equidigital number, since it uses as much as digits as its factorization.

625076561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 625076561 is about 25001.5311731102. The cubic root of 625076561 is about 855.0228832378.

The spelling of 625076561 in words is "six hundred twenty-five million, seventy-six thousand, five hundred sixty-one".