25469240 has 16 divisors (see below), whose sum is σ = 57305880. Its totient is φ = 10187680.

The previous prime is 25469231. The next prime is 25469243. The reversal of 25469240 is 4296452.

It is a junction number, because it is equal to n+sod(n) for n = 25469197 and 25469206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25469243) 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, 318326 + ... + 318405.

Almost surely, 2^25469240 is an apocalyptic number.

25469240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25469240 is an abundant number, since it is smaller than the sum of its proper divisors (31836640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25469240 is a wasteful number, since it uses less digits than its factorization.

25469240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636742 (or 636738 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 25469240 is about 5046.7058562987. The cubic root of 25469240 is about 294.2198673086.

The spelling of 25469240 in words is "twenty-five million, four hundred sixty-nine thousand, two hundred forty".