25255302525 has 48 divisors (see below), whose sum is σ = 47181355200. Its totient is φ = 13241177280.

The previous prime is 25255302521. The next prime is 25255302551. The reversal of 25255302525 is 52520355252.

25255302525 is a `hidden beast` number, since 2 + 52 + 55 + 30 + 2 + 525 = 666.

It is not a de Polignac number, because 25255302525 - 2² = 25255302521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25255302525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25255302521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 277254 + ... + 356903.

It is an arithmetic number, because the mean of its divisors is an integer number (982944900).

Almost surely, 2^25255302525 is an apocalyptic number.

25255302525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25255302525 is a deficient number, since it is larger than the sum of its proper divisors (21926052675).

25255302525 is a wasteful number, since it uses less digits than its factorization.

25255302525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634235 (or 634224 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 36.

Adding to 25255302525 its reverse (52520355252), we get a palindrome (77775657777).

The spelling of 25255302525 in words is "twenty-five billion, two hundred fifty-five million, three hundred two thousand, five hundred twenty-five".