25131469 has 4 divisors (see below), whose sum is σ = 27416160. Its totient is φ = 22846780.

The previous prime is 25131437. The next prime is 25131481. The reversal of 25131469 is 96413152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25131469 - 2⁵ = 25131437 is a prime.

It is a super-2 number, since 2×25131469² = 1263181468195922, which contains 22 as substring.

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 25131469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25131409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1142329 + ... + 1142350.

It is an arithmetic number, because the mean of its divisors is an integer number (6854040).

Almost surely, 2^25131469 is an apocalyptic number.

It is an amenable number.

25131469 is a deficient number, since it is larger than the sum of its proper divisors (2284691).

25131469 is a wasteful number, since it uses less digits than its factorization.

25131469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284690.

The product of its digits is 6480, while the sum is 31.

The square root of 25131469 is about 5013.1296611997. The cubic root of 25131469 is about 292.9134348831.

It can be divided in two parts, 25131 and 469, that added together give a square (25600 = 160²).

The spelling of 25131469 in words is "twenty-five million, one hundred thirty-one thousand, four hundred sixty-nine".