725150009 has 2 divisors, whose sum is σ = 725150010. Its totient is φ = 725150008.

The previous prime is 725149993. The next prime is 725150053. The reversal of 725150009 is 900051527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 625150009 + 100000000 = 25003^2 + 10000^2 .

It is a cyclic number.

It is not a de Polignac number, because 725150009 - 2⁴ = 725149993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (725152009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362575004 + 362575005.

It is an arithmetic number, because the mean of its divisors is an integer number (362575005).

Almost surely, 2^725150009 is an apocalyptic number.

It is an amenable number.

725150009 is a deficient number, since it is larger than the sum of its proper divisors (1).

725150009 is an equidigital number, since it uses as much as digits as its factorization.

725150009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 725150009 is about 26928.6094887946. The cubic root of 725150009 is about 898.4128442498.

The spelling of 725150009 in words is "seven hundred twenty-five million, one hundred fifty thousand, nine".