25541614553 has 16 divisors (see below), whose sum is σ = 31439592576. Its totient is φ = 20206333440.

The previous prime is 25541614547. The next prime is 25541614561. The reversal of 25541614553 is 35541614552.

It is a cyclic number.

It is not a de Polignac number, because 25541614553 - 2¹⁰ = 25541613529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25541614553.

It is not an unprimeable number, because it can be changed into a prime (25541614513) 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, 1429193 + ... + 1446953.

It is an arithmetic number, because the mean of its divisors is an integer number (1964974536).

Almost surely, 2^25541614553 is an apocalyptic number.

It is an amenable number.

25541614553 is a deficient number, since it is larger than the sum of its proper divisors (5897978023).

25541614553 is a wasteful number, since it uses less digits than its factorization.

25541614553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33584.

The product of its digits is 360000, while the sum is 41.

Subtracting 25541614553 from its reverse (35541614552), we obtain a palindrome (9999999999).

The spelling of 25541614553 in words is "twenty-five billion, five hundred forty-one million, six hundred fourteen thousand, five hundred fifty-three".