25906534 has 8 divisors (see below), whose sum is σ = 38888928. Its totient is φ = 12943560.

The previous prime is 25906523. The next prime is 25906537. The reversal of 25906534 is 43560952.

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

It is a super-2 number, since 2×25906534² = 1342297007786312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25906534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25906537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862 + ... + 7249.

It is an arithmetic number, because the mean of its divisors is an integer number (4861116).

Almost surely, 2^25906534 is an apocalyptic number.

25906534 is a deficient number, since it is larger than the sum of its proper divisors (12982394).

25906534 is a wasteful number, since it uses less digits than its factorization.

25906534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9710.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 25906534 is about 5089.8461666341. The cubic root of 25906534 is about 295.8941900237.

The spelling of 25906534 in words is "twenty-five million, nine hundred six thousand, five hundred thirty-four".