22040340425 has 12 divisors (see below), whose sum is σ = 27407455260. Its totient is φ = 17582315520.

The previous prime is 22040340403. The next prime is 22040340437. The reversal of 22040340425 is 52404304022.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 728136256 + 21312204169 = 26984^2 + 145987^2 .

It is not a de Polignac number, because 22040340425 - 2⁸ = 22040340169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22040340394 and 22040340403.

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, 1239920 + ... + 1257569.

It is an arithmetic number, because the mean of its divisors is an integer number (2283954605).

Almost surely, 2^22040340425 is an apocalyptic number.

22040340425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22040340425 is a deficient number, since it is larger than the sum of its proper divisors (5367114835).

22040340425 is a wasteful number, since it uses less digits than its factorization.

22040340425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497852 (or 2497847 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

Adding to 22040340425 its reverse (52404304022), we get a palindrome (74444644447).

The spelling of 22040340425 in words is "twenty-two billion, forty million, three hundred forty thousand, four hundred twenty-five".