25140135 has 16 divisors (see below), whose sum is σ = 42341760. Its totient is φ = 12702240.

The previous prime is 25140133. The next prime is 25140139. The reversal of 25140135 is 53104152.

It is not a de Polignac number, because 25140135 - 2¹ = 25140133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25140133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43821 + ... + 44390.

It is an arithmetic number, because the mean of its divisors is an integer number (2646360).

Almost surely, 2^25140135 is an apocalyptic number.

25140135 is a deficient number, since it is larger than the sum of its proper divisors (17201625).

25140135 is a wasteful number, since it uses less digits than its factorization.

25140135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88238.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 25140135 is about 5013.9939170286. The cubic root of 25140135 is about 292.9470991324.

Adding to 25140135 its reverse (53104152), we get a palindrome (78244287).

The spelling of 25140135 in words is "twenty-five million, one hundred forty thousand, one hundred thirty-five".