15225512501 has 2 divisors, whose sum is σ = 15225512502. Its totient is φ = 15225512500.

The previous prime is 15225512441. The next prime is 15225512503. The reversal of 15225512501 is 10521552251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15141056401 + 84456100 = 123049^2 + 9190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15225512501 is a prime.

Together with 15225512503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15225512503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7612756250 + 7612756251.

It is an arithmetic number, because the mean of its divisors is an integer number (7612756251).

Almost surely, 2^15225512501 is an apocalyptic number.

It is an amenable number.

15225512501 is a deficient number, since it is larger than the sum of its proper divisors (1).

15225512501 is an equidigital number, since it uses as much as digits as its factorization.

15225512501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5000, while the sum is 29.

The spelling of 15225512501 in words is "fifteen billion, two hundred twenty-five million, five hundred twelve thousand, five hundred one".