15251254493 has 2 divisors, whose sum is σ = 15251254494. Its totient is φ = 15251254492.

The previous prime is 15251254463. The next prime is 15251254549. The reversal of 15251254493 is 39445215251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14800668964 + 450585529 = 121658^2 + 21227^2 .

It is a cyclic number.

It is not a de Polignac number, because 15251254493 - 2¹⁴ = 15251238109 is a prime.

It is a super-2 number, since 2×15251254493² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15251254493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15251254423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7625627246 + 7625627247.

It is an arithmetic number, because the mean of its divisors is an integer number (7625627247).

Almost surely, 2^15251254493 is an apocalyptic number.

It is an amenable number.

15251254493 is a deficient number, since it is larger than the sum of its proper divisors (1).

15251254493 is an equidigital number, since it uses as much as digits as its factorization.

15251254493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 41.

The spelling of 15251254493 in words is "fifteen billion, two hundred fifty-one million, two hundred fifty-four thousand, four hundred ninety-three".