25125104525 has 12 divisors (see below), whose sum is σ = 32987784852. Its totient is φ = 18917725440.

The previous prime is 25125104509. The next prime is 25125104567. The reversal of 25125104525 is 52540152152.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1444 + 25125103081 = 38^2 + 158509^2 .

It is not a de Polignac number, because 25125104525 - 2⁴ = 25125104509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25125104491 and 25125104500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29558522 + ... + 29559371.

It is an arithmetic number, because the mean of its divisors is an integer number (2748982071).

Almost surely, 2^25125104525 is an apocalyptic number.

25125104525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25125104525 is a deficient number, since it is larger than the sum of its proper divisors (7862680327).

25125104525 is a wasteful number, since it uses less digits than its factorization.

25125104525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59117920 (or 59117915 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

Adding to 25125104525 its reverse (52540152152), we get a palindrome (77665256677).

The spelling of 25125104525 in words is "twenty-five billion, one hundred twenty-five million, one hundred four thousand, five hundred twenty-five".