15025121149 has 2 divisors, whose sum is σ = 15025121150. Its totient is φ = 15025121148.

The previous prime is 15025121123. The next prime is 15025121171. The reversal of 15025121149 is 94112152051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14992288249 + 32832900 = 122443^2 + 5730^2 .

It is a cyclic number.

It is not a de Polignac number, because 15025121149 - 2⁵ = 15025121117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15025121149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15025121119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7512560574 + 7512560575.

It is an arithmetic number, because the mean of its divisors is an integer number (7512560575).

Almost surely, 2^15025121149 is an apocalyptic number.

It is an amenable number.

15025121149 is a deficient number, since it is larger than the sum of its proper divisors (1).

15025121149 is an equidigital number, since it uses as much as digits as its factorization.

15025121149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 31.

The spelling of 15025121149 in words is "fifteen billion, twenty-five million, one hundred twenty-one thousand, one hundred forty-nine".