25641514043 has 4 divisors (see below), whose sum is σ = 25736132448. Its totient is φ = 25546895640.

The previous prime is 25641514039. The next prime is 25641514081. The reversal of 25641514043 is 34041514652.

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 25641514043 - 2² = 25641514039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25641513994 and 25641514012.

It is not an unprimeable number, because it can be changed into a prime (25641513043) 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, 47308796 + ... + 47309337.

It is an arithmetic number, because the mean of its divisors is an integer number (6434033112).

Almost surely, 2^25641514043 is an apocalyptic number.

25641514043 is a deficient number, since it is larger than the sum of its proper divisors (94618405).

25641514043 is an equidigital number, since it uses as much as digits as its factorization.

25641514043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94618404.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 25641514043 in words is "twenty-five billion, six hundred forty-one million, five hundred fourteen thousand, forty-three".