25012535 has 4 divisors (see below), whose sum is σ = 30015048. Its totient is φ = 20010024.

The previous prime is 25012511. The next prime is 25012543. The reversal of 25012535 is 53521052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25012535 - 2⁸ = 25012279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25012535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2501249 + ... + 2501258.

It is an arithmetic number, because the mean of its divisors is an integer number (7503762).

Almost surely, 2^25012535 is an apocalyptic number.

25012535 is a deficient number, since it is larger than the sum of its proper divisors (5002513).

25012535 is an equidigital number, since it uses as much as digits as its factorization.

25012535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002512.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 25012535 is about 5001.2533429132. The cubic root of 25012535 is about 292.4506357389.

Adding to 25012535 its reverse (53521052), we get a palindrome (78533587).

The spelling of 25012535 in words is "twenty-five million, twelve thousand, five hundred thirty-five".