625678477 has 2 divisors, whose sum is σ = 625678478. Its totient is φ = 625678476.

The previous prime is 625678463. The next prime is 625678513. The reversal of 625678477 is 774876526.

625678477 is nontrivially palindromic in base 12.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522168201 + 103510276 = 22851^2 + 10174^2 .

It is a cyclic number.

It is not a de Polignac number, because 625678477 - 2⁷ = 625678349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625678577) 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, 312839238 + 312839239.

It is an arithmetic number, because the mean of its divisors is an integer number (312839239).

Almost surely, 2^625678477 is an apocalyptic number.

It is an amenable number.

625678477 is a deficient number, since it is larger than the sum of its proper divisors (1).

625678477 is an equidigital number, since it uses as much as digits as its factorization.

625678477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3951360, while the sum is 52.

The square root of 625678477 is about 25013.5658593492. The cubic root of 625678477 is about 855.2972426150.

The spelling of 625678477 in words is "six hundred twenty-five million, six hundred seventy-eight thousand, four hundred seventy-seven".