725586551 has 2 divisors, whose sum is σ = 725586552. Its totient is φ = 725586550.

The previous prime is 725586509. The next prime is 725586557. The reversal of 725586551 is 155685527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725586551 - 2¹⁰ = 725585527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725586557) 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, 362793275 + 362793276.

It is an arithmetic number, because the mean of its divisors is an integer number (362793276).

Almost surely, 2^725586551 is an apocalyptic number.

725586551 is a deficient number, since it is larger than the sum of its proper divisors (1).

725586551 is an equidigital number, since it uses as much as digits as its factorization.

725586551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 420000, while the sum is 44.

The square root of 725586551 is about 26936.7138121932. The cubic root of 725586551 is about 898.5930902957.

The spelling of 725586551 in words is "seven hundred twenty-five million, five hundred eighty-six thousand, five hundred fifty-one".