15541250251 has 2 divisors, whose sum is σ = 15541250252. Its totient is φ = 15541250250.

The previous prime is 15541250183. The next prime is 15541250297. The reversal of 15541250251 is 15205214551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15541250251 - 2²¹ = 15539153099 is a prime.

It is not a weakly prime, because it can be changed into another prime (15541251251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7770625125 + 7770625126.

It is an arithmetic number, because the mean of its divisors is an integer number (7770625126).

Almost surely, 2^15541250251 is an apocalyptic number.

15541250251 is a deficient number, since it is larger than the sum of its proper divisors (1).

15541250251 is an equidigital number, since it uses as much as digits as its factorization.

15541250251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 15541250251 in words is "fifteen billion, five hundred forty-one million, two hundred fifty thousand, two hundred fifty-one".