25140535 has 64 divisors (see below), whose sum is σ = 39813120. Its totient is φ = 14837760.

The previous prime is 25140527. The next prime is 25140589. The reversal of 25140535 is 53504152.

It is not a de Polignac number, because 25140535 - 2³ = 25140527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 534882 + ... + 534928.

It is an arithmetic number, because the mean of its divisors is an integer number (622080).

Almost surely, 2^25140535 is an apocalyptic number.

25140535 is a deficient number, since it is larger than the sum of its proper divisors (14672585).

25140535 is a wasteful number, since it uses less digits than its factorization.

25140535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 25140535 is about 5014.0338052311. The cubic root of 25140535 is about 292.9486527998.

Adding to 25140535 its reverse (53504152), we get a palindrome (78644687).

The spelling of 25140535 in words is "twenty-five million, one hundred forty thousand, five hundred thirty-five".