25133226740 has 12 divisors (see below), whose sum is σ = 52779776196. Its totient is φ = 10053290688.

The previous prime is 25133226709. The next prime is 25133226749. The reversal of 25133226740 is 4762233152.

It can be written as a sum of positive squares in 2 ways, for example, as 17906186596 + 7227040144 = 133814^2 + 85012^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25133226740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25133226749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628330649 + ... + 628330688.

It is an arithmetic number, because the mean of its divisors is an integer number (4398314683).

Almost surely, 2^25133226740 is an apocalyptic number.

25133226740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25133226740 is an abundant number, since it is smaller than the sum of its proper divisors (27646549456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25133226740 is a wasteful number, since it uses less digits than its factorization.

25133226740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256661346 (or 1256661344 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

Adding to 25133226740 its reverse (4762233152), we get a palindrome (29895459892).

The spelling of 25133226740 in words is "twenty-five billion, one hundred thirty-three million, two hundred twenty-six thousand, seven hundred forty".