15405132251 has 2 divisors, whose sum is σ = 15405132252. Its totient is φ = 15405132250.

The previous prime is 15405132241. The next prime is 15405132271. The reversal of 15405132251 is 15223150451.

It is a weak prime.

It is an emirp because it is prime and its reverse (15223150451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15405132251 - 2²² = 15400937947 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (15405132241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7702566125 + 7702566126.

It is an arithmetic number, because the mean of its divisors is an integer number (7702566126).

Almost surely, 2^15405132251 is an apocalyptic number.

15405132251 is a deficient number, since it is larger than the sum of its proper divisors (1).

15405132251 is an equidigital number, since it uses as much as digits as its factorization.

15405132251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 15405132251 in words is "fifteen billion, four hundred five million, one hundred thirty-two thousand, two hundred fifty-one".