25435644653452 has 24 divisors (see below), whose sum is σ = 48574052730000. Its totient is φ = 11558062671360.

The previous prime is 25435644653417. The next prime is 25435644653453.

It is a happy number.

25435644653452 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (25435644653453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89706577 + ... + 89989672.

It is an arithmetic number, because the mean of its divisors is an integer number (2023918863750).

Almost surely, 2^{25435644653452} is an apocalyptic number.

25435644653452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25435644653452 is a deficient number, since it is larger than the sum of its proper divisors (23138408076548).

25435644653452 is a wasteful number, since it uses less digits than its factorization.

25435644653452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179699481 (or 179699479 counting only the distinct ones).

The product of its digits is 207360000, while the sum is 58.

The spelling of 25435644653452 in words is "twenty-five trillion, four hundred thirty-five billion, six hundred forty-four million, six hundred fifty-three thousand, four hundred fifty-two".