15125291287 has 2 divisors, whose sum is σ = 15125291288. Its totient is φ = 15125291286.

The previous prime is 15125291261. The next prime is 15125291317. The reversal of 15125291287 is 78219252151.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15125291287 is a prime.

It is a super-3 number, since 3×15125291287³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15125291227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7562645643 + 7562645644.

It is an arithmetic number, because the mean of its divisors is an integer number (7562645644).

Almost surely, 2^15125291287 is an apocalyptic number.

15125291287 is a deficient number, since it is larger than the sum of its proper divisors (1).

15125291287 is an equidigital number, since it uses as much as digits as its factorization.

15125291287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 43.

The spelling of 15125291287 in words is "fifteen billion, one hundred twenty-five million, two hundred ninety-one thousand, two hundred eighty-seven".