25543054402125 has 64 divisors (see below), whose sum is σ = 45775882833408. Its totient is φ = 12574292352000.

The previous prime is 25543054402109. The next prime is 25543054402207. The reversal of 25543054402125 is 52120445034552.

It is not a de Polignac number, because 25543054402125 - 2⁴ = 25543054402109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86544805 + ... + 86839445.

It is an arithmetic number, because the mean of its divisors is an integer number (715248169272).

Almost surely, 2^{25543054402125} is an apocalyptic number.

25543054402125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25543054402125 is a deficient number, since it is larger than the sum of its proper divisors (20232828431283).

25543054402125 is a wasteful number, since it uses less digits than its factorization.

25543054402125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312455 (or 312445 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 42.

Adding to 25543054402125 its reverse (52120445034552), we get a palindrome (77663499436677).

The spelling of 25543054402125 in words is "twenty-five trillion, five hundred forty-three billion, fifty-four million, four hundred two thousand, one hundred twenty-five".