15250320497 has 2 divisors, whose sum is σ = 15250320498. Its totient is φ = 15250320496.

The previous prime is 15250320457. The next prime is 15250320511. The reversal of 15250320497 is 79402305251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13289247841 + 1961072656 = 115279^2 + 44284^2 .

It is a cyclic number.

It is not a de Polignac number, because 15250320497 - 2¹⁰ = 15250319473 is a prime.

It is a super-2 number, since 2×15250320497² (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 15250320497.

It is not a weakly prime, because it can be changed into another prime (15250320457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7625160248 + 7625160249.

It is an arithmetic number, because the mean of its divisors is an integer number (7625160249).

Almost surely, 2^15250320497 is an apocalyptic number.

It is an amenable number.

15250320497 is a deficient number, since it is larger than the sum of its proper divisors (1).

15250320497 is an equidigital number, since it uses as much as digits as its factorization.

15250320497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 15250320497 in words is "fifteen billion, two hundred fifty million, three hundred twenty thousand, four hundred ninety-seven".