25127400125 has 8 divisors (see below), whose sum is σ = 31358995512. Its totient is φ = 20101920000.

The previous prime is 25127400107. The next prime is 25127400131. The reversal of 25127400125 is 52100472152.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5896089796 + 19231310329 = 76786^2 + 138677^2 .

It is not a de Polignac number, because 25127400125 - 2⁶ = 25127400061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100509476 + ... + 100509725.

It is an arithmetic number, because the mean of its divisors is an integer number (3919874439).

Almost surely, 2^25127400125 is an apocalyptic number.

25127400125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25127400125 is a deficient number, since it is larger than the sum of its proper divisors (6231595387).

25127400125 is an equidigital number, since it uses as much as digits as its factorization.

25127400125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201019216 (or 201019206 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

Adding to 25127400125 its reverse (52100472152), we get a palindrome (77227872277).

The spelling of 25127400125 in words is "twenty-five billion, one hundred twenty-seven million, four hundred thousand, one hundred twenty-five".