25135205 has 16 divisors (see below), whose sum is σ = 31739904. Its totient is φ = 19071360.

The previous prime is 25135189. The next prime is 25135213. The reversal of 25135205 is 50253152.

25135205 is nontrivially palindromic in base 7.

It is not a de Polignac number, because 25135205 - 2⁴ = 25135189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 13745 + ... + 15465.

It is an arithmetic number, because the mean of its divisors is an integer number (1983744).

Almost surely, 2^25135205 is an apocalyptic number.

It is an amenable number.

25135205 is a deficient number, since it is larger than the sum of its proper divisors (6604699).

25135205 is a wasteful number, since it uses less digits than its factorization.

25135205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876.

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

The square root of 25135205 is about 5013.5022688735. The cubic root of 25135205 is about 292.9279488294.

Adding to 25135205 its reverse (50253152), we get a palindrome (75388357).

The spelling of 25135205 in words is "twenty-five million, one hundred thirty-five thousand, two hundred five".