25540230525 has 48 divisors (see below), whose sum is σ = 42429474816. Its totient is φ = 13556171520.

The previous prime is 25540230511. The next prime is 25540230571. The reversal of 25540230525 is 52503204552.

It is not a de Polignac number, because 25540230525 - 2⁹ = 25540230013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21054819 + ... + 21056031.

It is an arithmetic number, because the mean of its divisors is an integer number (883947392).

Almost surely, 2^25540230525 is an apocalyptic number.

25540230525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25540230525 is a deficient number, since it is larger than the sum of its proper divisors (16889244291).

25540230525 is a wasteful number, since it uses less digits than its factorization.

25540230525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342 (or 2337 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 33.

The spelling of 25540230525 in words is "twenty-five billion, five hundred forty million, two hundred thirty thousand, five hundred twenty-five".