625564087 has 2 divisors, whose sum is σ = 625564088. Its totient is φ = 625564086.

The previous prime is 625564063. The next prime is 625564091. The reversal of 625564087 is 780465526.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 625564087 - 2²³ = 617175479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625564007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312782043 + 312782044.

It is an arithmetic number, because the mean of its divisors is an integer number (312782044).

Almost surely, 2^625564087 is an apocalyptic number.

625564087 is a deficient number, since it is larger than the sum of its proper divisors (1).

625564087 is an equidigital number, since it uses as much as digits as its factorization.

625564087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 625564087 is about 25011.2791955949. The cubic root of 625564087 is about 855.2451160472.

The spelling of 625564087 in words is "six hundred twenty-five million, five hundred sixty-four thousand, eighty-seven".