25469609 has 8 divisors (see below), whose sum is σ = 27909120. Its totient is φ = 23050800.

The previous prime is 25469597. The next prime is 25469669. The reversal of 25469609 is 90696452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25469609 - 2⁴ = 25469593 is a prime.

It is a super-2 number, since 2×25469609² = 1297401965225762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25469669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2537 + ... + 7574.

It is an arithmetic number, because the mean of its divisors is an integer number (3488640).

Almost surely, 2^25469609 is an apocalyptic number.

It is an amenable number.

25469609 is a deficient number, since it is larger than the sum of its proper divisors (2439511).

25469609 is a wasteful number, since it uses less digits than its factorization.

25469609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10351.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 25469609 is about 5046.7424146671. The cubic root of 25469609 is about 294.2212881939.

The spelling of 25469609 in words is "twenty-five million, four hundred sixty-nine thousand, six hundred nine".