25125116525 has 6 divisors (see below), whose sum is σ = 31155144522. Its totient is φ = 20100093200.

The previous prime is 25125116519. The next prime is 25125116537. The reversal of 25125116525 is 52561152152.

It can be written as a sum of positive squares in 3 ways, for example, as 28536964 + 25096579561 = 5342^2 + 158419^2 .

It is not a de Polignac number, because 25125116525 - 2¹⁰ = 25125115501 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 5 ways as a sum of consecutive naturals, for example, 502502306 + ... + 502502355.

It is an arithmetic number, because the mean of its divisors is an integer number (5192524087).

Almost surely, 2^25125116525 is an apocalyptic number.

25125116525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25125116525 is a deficient number, since it is larger than the sum of its proper divisors (6030027997).

25125116525 is a wasteful number, since it uses less digits than its factorization.

25125116525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005004671 (or 1005004666 counting only the distinct ones).

The product of its digits is 30000, while the sum is 35.

Adding to 25125116525 its reverse (52561152152), we get a palindrome (77686268677).

The spelling of 25125116525 in words is "twenty-five billion, one hundred twenty-five million, one hundred sixteen thousand, five hundred twenty-five".