725699999 has 2 divisors, whose sum is σ = 725700000. Its totient is φ = 725699998.

The previous prime is 725699951. The next prime is 725700047. The reversal of 725699999 is 999996527.

It is a balanced prime because it is at equal distance from previous prime (725699951) and next prime (725700047).

It is a cyclic number.

It is not a de Polignac number, because 725699999 - 2¹² = 725695903 is a prime.

725699999 is a modest number, since divided by 99999 gives 7256 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725699929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362849999 + 362850000.

It is an arithmetic number, because the mean of its divisors is an integer number (362850000).

Almost surely, 2^725699999 is an apocalyptic number.

725699999 is a deficient number, since it is larger than the sum of its proper divisors (1).

725699999 is an equidigital number, since it uses as much as digits as its factorization.

725699999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24800580, while the sum is 65.

The square root of 725699999 is about 26938.8195546872. The cubic root of 725699999 is about 898.6399205813.

The spelling of 725699999 in words is "seven hundred twenty-five million, six hundred ninety-nine thousand, nine hundred ninety-nine".