25840435 has 4 divisors (see below), whose sum is σ = 31008528. Its totient is φ = 20672344.

The previous prime is 25840429. The next prime is 25840469. The reversal of 25840435 is 53404852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25840435 - 2³ = 25840427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25840397 and 25840406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2584039 + ... + 2584048.

It is an arithmetic number, because the mean of its divisors is an integer number (7752132).

Almost surely, 2^25840435 is an apocalyptic number.

25840435 is a deficient number, since it is larger than the sum of its proper divisors (5168093).

25840435 is an equidigital number, since it uses as much as digits as its factorization.

25840435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168092.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 25840435 is about 5083.3487977907. The cubic root of 25840435 is about 295.6423234786.

The spelling of 25840435 in words is "twenty-five million, eight hundred forty thousand, four hundred thirty-five".