25253554543 has 16 divisors (see below), whose sum is σ = 28953469440. Its totient is φ = 21576823776.

The previous prime is 25253554541. The next prime is 25253554567. The reversal of 25253554543 is 34545535252.

It is a cyclic number.

It is not a de Polignac number, because 25253554543 - 2¹ = 25253554541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25253554543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25253554541) 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, 2953168 + ... + 2961706.

It is an arithmetic number, because the mean of its divisors is an integer number (1809591840).

Almost surely, 2^25253554543 is an apocalyptic number.

25253554543 is a deficient number, since it is larger than the sum of its proper divisors (3699914897).

25253554543 is an equidigital number, since it uses as much as digits as its factorization.

25253554543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9846.

The product of its digits is 1800000, while the sum is 43.

The spelling of 25253554543 in words is "twenty-five billion, two hundred fifty-three million, five hundred fifty-four thousand, five hundred forty-three".