25245540135 has 20 divisors (see below), whose sum is σ = 45254968968. Its totient is φ = 13464287856.

The previous prime is 25245540119. The next prime is 25245540139. The reversal of 25245540135 is 53104554252.

25245540135 is a `hidden beast` number, since 2 + 5 + 245 + 5 + 401 + 3 + 5 = 666.

It is not a de Polignac number, because 25245540135 - 2⁴ = 25245540119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25245540135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25245540139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31166929 + ... + 31167738.

Almost surely, 2^25245540135 is an apocalyptic number.

25245540135 is a deficient number, since it is larger than the sum of its proper divisors (20009428833).

25245540135 is an equidigital number, since it uses as much as digits as its factorization.

25245540135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62334684 (or 62334675 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 25245540135 in words is "twenty-five billion, two hundred forty-five million, five hundred forty thousand, one hundred thirty-five".