25473761543 has 4 divisors (see below), whose sum is σ = 25616073240. Its totient is φ = 25331449848.

The previous prime is 25473761513. The next prime is 25473761557. The reversal of 25473761543 is 34516737452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25473761543 - 2¹⁰ = 25473760519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25473761513) 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, 71155580 + ... + 71155937.

It is an arithmetic number, because the mean of its divisors is an integer number (6404018310).

Almost surely, 2^25473761543 is an apocalyptic number.

25473761543 is a deficient number, since it is larger than the sum of its proper divisors (142311697).

25473761543 is a wasteful number, since it uses less digits than its factorization.

25473761543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142311696.

The product of its digits is 2116800, while the sum is 47.

The spelling of 25473761543 in words is "twenty-five billion, four hundred seventy-three million, seven hundred sixty-one thousand, five hundred forty-three".