25212325343240 has 64 divisors (see below), whose sum is σ = 65160788774400. Its totient is φ = 8600346494208.

The previous prime is 25212325343237. The next prime is 25212325343243. The reversal of 25212325343240 is 4234352321252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25212325343237) and next prime (25212325343243).

It is a super-2 number, since 2×25212325343240² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25212325343194 and 25212325343203.

It is not an unprimeable number, because it can be changed into a prime (25212325343243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228482960 + ... + 228593279.

It is an arithmetic number, because the mean of its divisors is an integer number (1018137324600).

Almost surely, 2^{25212325343240} is an apocalyptic number.

25212325343240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25212325343240 is an abundant number, since it is smaller than the sum of its proper divisors (39948463431160).

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

25212325343240 is a wasteful number, since it uses less digits than its factorization.

25212325343240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457076454 (or 457076450 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 25212325343240 its reverse (4234352321252), we get a palindrome (29446677664492).

The spelling of 25212325343240 in words is "twenty-five trillion, two hundred twelve billion, three hundred twenty-five million, three hundred forty-three thousand, two hundred forty".