21740241425 has 12 divisors (see below), whose sum is σ = 30809028096. Its totient is φ = 14907594000.

The previous prime is 21740241409. The next prime is 21740241437. The reversal of 21740241425 is 52414204712.

It is not a de Polignac number, because 21740241425 - 2⁴ = 21740241409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21740241391 and 21740241400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62114801 + ... + 62115150.

It is an arithmetic number, because the mean of its divisors is an integer number (2567419008).

Almost surely, 2^21740241425 is an apocalyptic number.

21740241425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21740241425 is a deficient number, since it is larger than the sum of its proper divisors (9068786671).

21740241425 is a wasteful number, since it uses less digits than its factorization.

21740241425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124229968 (or 124229963 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The spelling of 21740241425 in words is "twenty-one billion, seven hundred forty million, two hundred forty-one thousand, four hundred twenty-five".