25020135 has 48 divisors (see below), whose sum is σ = 50606400. Its totient is φ = 11430720.

The previous prime is 25020133. The next prime is 25020157. The reversal of 25020135 is 53102052.

It is a happy number.

It is not a de Polignac number, because 25020135 - 2¹ = 25020133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25020133) 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 47 ways as a sum of consecutive naturals, for example, 14625 + ... + 16245.

It is an arithmetic number, because the mean of its divisors is an integer number (1054300).

Almost surely, 2^25020135 is an apocalyptic number.

25020135 is an abundant number, since it is smaller than the sum of its proper divisors (25586265).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25020135 is a wasteful number, since it uses less digits than its factorization.

25020135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653 (or 1636 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 25020135 is about 5002.0130947450. The cubic root of 25020135 is about 292.4802528856.

Adding to 25020135 its reverse (53102052), we get a palindrome (78122187).

The spelling of 25020135 in words is "twenty-five million, twenty thousand, one hundred thirty-five".