15250620149 has 2 divisors, whose sum is σ = 15250620150. Its totient is φ = 15250620148.

The previous prime is 15250620127. The next prime is 15250620167. The reversal of 15250620149 is 94102605251.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13661401924 + 1589218225 = 116882^2 + 39865^2 .

It is an emirp because it is prime and its reverse (94102605251) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15250620149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15250620349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7625310074 + 7625310075.

It is an arithmetic number, because the mean of its divisors is an integer number (7625310075).

Almost surely, 2^15250620149 is an apocalyptic number.

It is an amenable number.

15250620149 is a deficient number, since it is larger than the sum of its proper divisors (1).

15250620149 is an equidigital number, since it uses as much as digits as its factorization.

15250620149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 15250620149 in words is "fifteen billion, two hundred fifty million, six hundred twenty thousand, one hundred forty-nine".