15643422013425 has 24 divisors (see below), whose sum is σ = 25900686714240. Its totient is φ = 8331256584000.

The previous prime is 15643422013399. The next prime is 15643422013451. The reversal of 15643422013425 is 52431022434651.

It is an interprime number because it is at equal distance from previous prime (15643422013399) and next prime (15643422013451).

It is not a de Polignac number, because 15643422013425 - 2¹⁴ = 15643421997041 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148719865 + ... + 148825014.

It is an arithmetic number, because the mean of its divisors is an integer number (1079195279760).

Almost surely, 2^{15643422013425} is an apocalyptic number.

15643422013425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15643422013425 is a deficient number, since it is larger than the sum of its proper divisors (10257264700815).

15643422013425 is a wasteful number, since it uses less digits than its factorization.

15643422013425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297545593 (or 297545588 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 15643422013425 in words is "fifteen trillion, six hundred forty-three billion, four hundred twenty-two million, thirteen thousand, four hundred twenty-five".