25469140 has 12 divisors (see below), whose sum is σ = 53485236. Its totient is φ = 10187648.

The previous prime is 25469107. The next prime is 25469141. The reversal of 25469140 is 4196452.

It can be written as a sum of positive squares in 2 ways, for example, as 11316496 + 14152644 = 3364^2 + 3762^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25469141) 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, 636709 + ... + 636748.

It is an arithmetic number, because the mean of its divisors is an integer number (4457103).

Almost surely, 2^25469140 is an apocalyptic number.

25469140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25469140 is an abundant number, since it is smaller than the sum of its proper divisors (28016096).

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

25469140 is a wasteful number, since it uses less digits than its factorization.

25469140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273466 (or 1273464 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 25469140 is about 5046.6959488362. The cubic root of 25469140 is about 294.2194822424.

The spelling of 25469140 in words is "twenty-five million, four hundred sixty-nine thousand, one hundred forty".