25345342340 has 12 divisors (see below), whose sum is σ = 53225218956. Its totient is φ = 10138136928.

The previous prime is 25345342331. The next prime is 25345342343. The reversal of 25345342340 is 4324354352.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9163467076 + 16181875264 = 95726^2 + 127208^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25345342340.

It is not an unprimeable number, because it can be changed into a prime (25345342343) 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, 633633539 + ... + 633633578.

It is an arithmetic number, because the mean of its divisors is an integer number (4435434913).

Almost surely, 2^25345342340 is an apocalyptic number.

25345342340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25345342340 is an abundant number, since it is smaller than the sum of its proper divisors (27879876616).

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

25345342340 is a wasteful number, since it uses less digits than its factorization.

25345342340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267267126 (or 1267267124 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 35.

Adding to 25345342340 its reverse (4324354352), we get a palindrome (29669696692).

The spelling of 25345342340 in words is "twenty-five billion, three hundred forty-five million, three hundred forty-two thousand, three hundred forty".