21250425415132 has 12 divisors (see below), whose sum is σ = 37188352655496. Its totient is φ = 10625181799280.

The previous prime is 21250425415111. The next prime is 21250425415139. The reversal of 21250425415132 is 23151452405212.

It is a junction number, because it is equal to n+sod(n) for n = 21250425415091 and 21250425415100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21250425415139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6144094 + ... + 8958277.

It is an arithmetic number, because the mean of its divisors is an integer number (3099029387958).

Almost surely, 2^{21250425415132} is an apocalyptic number.

It is an amenable number.

21250425415132 is a deficient number, since it is larger than the sum of its proper divisors (15937927240364).

21250425415132 is a wasteful number, since it uses less digits than its factorization.

21250425415132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15454148 (or 15454146 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 21250425415132 in words is "twenty-one trillion, two hundred fifty billion, four hundred twenty-five million, four hundred fifteen thousand, one hundred thirty-two".