21443150152425 has 24 divisors (see below), whose sum is σ = 36121593320064. Its totient is φ = 11220566618560.

The previous prime is 21443150152313. The next prime is 21443150152453. The reversal of 21443150152425 is 52425105134412.

It is not a de Polignac number, because 21443150152425 - 2²⁸ = 21442881716969 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, 2697247617 + ... + 2697255566.

It is an arithmetic number, because the mean of its divisors is an integer number (1505066388336).

Almost surely, 2^{21443150152425} is an apocalyptic number.

21443150152425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21443150152425 is a deficient number, since it is larger than the sum of its proper divisors (14678443167639).

21443150152425 is a wasteful number, since it uses less digits than its factorization.

21443150152425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5394503249 (or 5394503244 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 39.

Adding to 21443150152425 its reverse (52425105134412), we get a palindrome (73868255286837).

The spelling of 21443150152425 in words is "twenty-one trillion, four hundred forty-three billion, one hundred fifty million, one hundred fifty-two thousand, four hundred twenty-five".