25312535 has 16 divisors (see below), whose sum is σ = 32301504. Its totient is φ = 18999552.

The previous prime is 25312517. The next prime is 25312549. The reversal of 25312535 is 53521352.

It is a cyclic number.

It is not a de Polignac number, because 25312535 - 2⁸ = 25312279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4019 + ... + 8171.

It is an arithmetic number, because the mean of its divisors is an integer number (2018844).

Almost surely, 2^25312535 is an apocalyptic number.

25312535 is a deficient number, since it is larger than the sum of its proper divisors (6988969).

25312535 is a wasteful number, since it uses less digits than its factorization.

25312535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234.

The product of its digits is 4500, while the sum is 26.

The square root of 25312535 is about 5031.1564277013. The cubic root of 25312535 is about 293.6152084164.

Adding to 25312535 its reverse (53521352), we get a palindrome (78833887).

The spelling of 25312535 in words is "twenty-five million, three hundred twelve thousand, five hundred thirty-five".