25906434 has 8 divisors (see below), whose sum is σ = 51812880. Its totient is φ = 8635476.

The previous prime is 25906427. The next prime is 25906451. The reversal of 25906434 is 43460952.

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

25906434 is an admirable number.

It is a super-2 number, since 2×25906434² = 1342286645192712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25906395 and 25906404.

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, 2158864 + ... + 2158875.

It is an arithmetic number, because the mean of its divisors is an integer number (6476610).

Almost surely, 2^25906434 is an apocalyptic number.

25906434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25906434 is a wasteful number, since it uses less digits than its factorization.

25906434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317744.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 25906434 is about 5089.8363431450. The cubic root of 25906434 is about 295.8938093031.

The spelling of 25906434 in words is "twenty-five million, nine hundred six thousand, four hundred thirty-four".