25027013525 has 12 divisors (see below), whose sum is σ = 31148871300. Its totient is φ = 19947175680.

The previous prime is 25027013521. The next prime is 25027013551. The reversal of 25027013525 is 52531072052.

It can be written as a sum of positive squares in 6 ways, for example, as 4906442116 + 20120571409 = 70046^2 + 141847^2 .

It is not a de Polignac number, because 25027013525 - 2² = 25027013521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25027013491 and 25027013500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25027013521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1854020 + ... + 1867469.

It is an arithmetic number, because the mean of its divisors is an integer number (2595739275).

Almost surely, 2^25027013525 is an apocalyptic number.

25027013525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25027013525 is a deficient number, since it is larger than the sum of its proper divisors (6121857775).

25027013525 is a wasteful number, since it uses less digits than its factorization.

25027013525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721768 (or 3721763 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

Adding to 25027013525 its reverse (52531072052), we get a palindrome (77558085577).

The spelling of 25027013525 in words is "twenty-five billion, twenty-seven million, thirteen thousand, five hundred twenty-five".