25541252645 has 16 divisors (see below), whose sum is σ = 32355120000. Its totient is φ = 19302090048.

The previous prime is 25541252623. The next prime is 25541252669. The reversal of 25541252645 is 54625214552.

It is a cyclic number.

It is not a de Polignac number, because 25541252645 - 2²⁰ = 25540204069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352025 + ... + 418334.

It is an arithmetic number, because the mean of its divisors is an integer number (2022195000).

Almost surely, 2^25541252645 is an apocalyptic number.

It is an amenable number.

25541252645 is a deficient number, since it is larger than the sum of its proper divisors (6813867355).

25541252645 is a wasteful number, since it uses less digits than its factorization.

25541252645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770732.

The product of its digits is 480000, while the sum is 41.

The spelling of 25541252645 in words is "twenty-five billion, five hundred forty-one million, two hundred fifty-two thousand, six hundred forty-five".