15225240049 has 2 divisors, whose sum is σ = 15225240050. Its totient is φ = 15225240048.

The previous prime is 15225240047. The next prime is 15225240089. The reversal of 15225240049 is 94004252251.

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., 14097287824 + 1127952225 = 118732^2 + 33585^2 .

It is a cyclic number.

It is not a de Polignac number, because 15225240049 - 2¹ = 15225240047 is a prime.

Together with 15225240047, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 15225239996 and 15225240023.

It is not a weakly prime, because it can be changed into another prime (15225240047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7612620024 + 7612620025.

It is an arithmetic number, because the mean of its divisors is an integer number (7612620025).

Almost surely, 2^15225240049 is an apocalyptic number.

It is an amenable number.

15225240049 is a deficient number, since it is larger than the sum of its proper divisors (1).

15225240049 is an equidigital number, since it uses as much as digits as its factorization.

15225240049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 34.

It can be divided in two parts, 15 and 225240049, that added together give a square (225240064 = 15008²).

The spelling of 15225240049 in words is "fifteen billion, two hundred twenty-five million, two hundred forty thousand, forty-nine".