25426705 has 8 divisors (see below), whose sum is σ = 30640104. Its totient is φ = 20256000.

The previous prime is 25426657. The next prime is 25426721. The reversal of 25426705 is 50762452.

It can be written as a sum of positive squares in 4 ways, for example, as 2396304 + 23030401 = 1548^2 + 4799^2 .

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

It is not a de Polignac number, because 25426705 - 2¹¹ = 25424657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9346 + ... + 11755.

It is an arithmetic number, because the mean of its divisors is an integer number (3830013).

Almost surely, 2^25426705 is an apocalyptic number.

It is an amenable number.

25426705 is a deficient number, since it is larger than the sum of its proper divisors (5213399).

25426705 is a wasteful number, since it uses less digits than its factorization.

25426705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21347.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 25426705 is about 5042.4899603271. The cubic root of 25426705 is about 294.0559883807.

The spelling of 25426705 in words is "twenty-five million, four hundred twenty-six thousand, seven hundred five".