25341253215220 has 12 divisors (see below), whose sum is σ = 53216631752004. Its totient is φ = 10136501286080.

The previous prime is 25341253215217. The next prime is 25341253215227. The reversal of 25341253215220 is 2251235214352.

It can be written as a sum of positive squares in 2 ways, for example, as 16816593446416 + 8524659768804 = 4100804^2 + 2919702^2 .

It is a super-2 number, since 2×25341253215220² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25341253215220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25341253215227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633531330361 + ... + 633531330400.

It is an arithmetic number, because the mean of its divisors is an integer number (4434719312667).

Almost surely, 2^{25341253215220} is an apocalyptic number.

25341253215220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25341253215220 is an abundant number, since it is smaller than the sum of its proper divisors (27875378536784).

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

25341253215220 is a wasteful number, since it uses less digits than its factorization.

25341253215220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267062660770 (or 1267062660768 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 25341253215220 its reverse (2251235214352), we get a palindrome (27592488429572).

The spelling of 25341253215220 in words is "twenty-five trillion, three hundred forty-one billion, two hundred fifty-three million, two hundred fifteen thousand, two hundred twenty".