22240020425 has 24 divisors (see below), whose sum is σ = 31706054016. Its totient is φ = 15158960640.

The previous prime is 22240020373. The next prime is 22240020437. The reversal of 22240020425 is 52402004222.

It is not a de Polignac number, because 22240020425 - 2⁸ = 22240020169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22240020425.

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, 351272 + ... + 409721.

It is an arithmetic number, because the mean of its divisors is an integer number (1321085584).

Almost surely, 2^22240020425 is an apocalyptic number.

22240020425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22240020425 is a deficient number, since it is larger than the sum of its proper divisors (9466033591).

22240020425 is a wasteful number, since it uses less digits than its factorization.

22240020425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761177 (or 761172 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

Adding to 22240020425 its reverse (52402004222), we get a palindrome (74642024647).

The spelling of 22240020425 in words is "twenty-two billion, two hundred forty million, twenty thousand, four hundred twenty-five".