2625345421 has 2 divisors, whose sum is σ = 2625345422. Its totient is φ = 2625345420.

The previous prime is 2625345347. The next prime is 2625345427. The reversal of 2625345421 is 1245435262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1931602500 + 693742921 = 43950^2 + 26339^2 .

It is a cyclic number.

It is not a de Polignac number, because 2625345421 - 2¹⁷ = 2625214349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2625345427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1312672710 + 1312672711.

It is an arithmetic number, because the mean of its divisors is an integer number (1312672711).

Almost surely, 2^2625345421 is an apocalyptic number.

It is an amenable number.

2625345421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2625345421 is an equidigital number, since it uses as much as digits as its factorization.

2625345421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 34.

The square root of 2625345421 is about 51238.1246827009. The cubic root of 2625345421 is about 1379.5225928604.

The spelling of 2625345421 in words is "two billion, six hundred twenty-five million, three hundred forty-five thousand, four hundred twenty-one".