25262609 has 8 divisors (see below), whose sum is σ = 27095040. Its totient is φ = 23480496.

The previous prime is 25262569. The next prime is 25262621. The reversal of 25262609 is 90626252.

It is a happy number.

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 25262609 - 2²⁰ = 24214033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25262639) 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, 11537 + ... + 13550.

It is an arithmetic number, because the mean of its divisors is an integer number (3386880).

Almost surely, 2^25262609 is an apocalyptic number.

It is an amenable number.

25262609 is a deficient number, since it is larger than the sum of its proper divisors (1832431).

25262609 is a wasteful number, since it uses less digits than its factorization.

25262609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25159.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 25262609 is about 5026.1922963611. The cubic root of 25262609 is about 293.4220408651.

The spelling of 25262609 in words is "twenty-five million, two hundred sixty-two thousand, six hundred nine".