15225051553 has 2 divisors, whose sum is σ = 15225051554. Its totient is φ = 15225051552.

The previous prime is 15225051551. The next prime is 15225051559. The reversal of 15225051553 is 35515052251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12885201169 + 2339850384 = 113513^2 + 48372^2 .

It is a cyclic number.

It is not a de Polignac number, because 15225051553 - 2¹ = 15225051551 is a prime.

Together with 15225051551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15225051551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7612525776 + 7612525777.

It is an arithmetic number, because the mean of its divisors is an integer number (7612525777).

Almost surely, 2^15225051553 is an apocalyptic number.

It is an amenable number.

15225051553 is a deficient number, since it is larger than the sum of its proper divisors (1).

15225051553 is an equidigital number, since it uses as much as digits as its factorization.

15225051553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37500, while the sum is 34.

It can be divided in two parts, 15225051 and 553, that added together give a square (15225604 = 3902²).

The spelling of 15225051553 in words is "fifteen billion, two hundred twenty-five million, fifty-one thousand, five hundred fifty-three".