25150009 has 2 divisors, whose sum is σ = 25150010. Its totient is φ = 25150008.

The previous prime is 25150007. The next prime is 25150019. The reversal of 25150009 is 90005152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17197609 + 7952400 = 4147^2 + 2820^2 .

It is a cyclic number.

It is not a de Polignac number, because 25150009 - 2¹ = 25150007 is a prime.

Together with 25150007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25150001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12575004 + 12575005.

It is an arithmetic number, because the mean of its divisors is an integer number (12575005).

Almost surely, 2^25150009 is an apocalyptic number.

It is an amenable number.

25150009 is a deficient number, since it is larger than the sum of its proper divisors (1).

25150009 is an equidigital number, since it uses as much as digits as its factorization.

25150009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 25150009 is about 5014.9784645599. The cubic root of 25150009 is about 292.9854465936.

The spelling of 25150009 in words is "twenty-five million, one hundred fifty thousand, nine".