25227500009 has 2 divisors, whose sum is σ = 25227500010. Its totient is φ = 25227500008.

The previous prime is 25227500003. The next prime is 25227500029. The reversal of 25227500009 is 90000572252.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13519177984 + 11708322025 = 116272^2 + 108205^2 .

It is a cyclic number.

It is not a de Polignac number, because 25227500009 - 2¹² = 25227495913 is a prime.

It is a super-4 number, since 4×25227500009⁴ (a number of 43 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (25227500003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12613750004 + 12613750005.

It is an arithmetic number, because the mean of its divisors is an integer number (12613750005).

Almost surely, 2^25227500009 is an apocalyptic number.

It is an amenable number.

25227500009 is a deficient number, since it is larger than the sum of its proper divisors (1).

25227500009 is an equidigital number, since it uses as much as digits as its factorization.

25227500009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 32.

The spelling of 25227500009 in words is "twenty-five billion, two hundred twenty-seven million, five hundred thousand, nine".