25426645 has 8 divisors (see below), whose sum is σ = 32306904. Its totient is φ = 19144704.

The previous prime is 25426633. The next prime is 25426651. The reversal of 25426645 is 54662452.

It can be written as a sum of positive squares in 4 ways, for example, as 3129361 + 22297284 = 1769^2 + 4722^2 .

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 25426645 - 2¹⁷ = 25295573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25426645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149484 + ... + 149653.

It is an arithmetic number, because the mean of its divisors is an integer number (4038363).

Almost surely, 2^25426645 is an apocalyptic number.

It is an amenable number.

25426645 is a deficient number, since it is larger than the sum of its proper divisors (6880259).

25426645 is a wasteful number, since it uses less digits than its factorization.

25426645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299159.

The product of its digits is 57600, while the sum is 34.

The square root of 25426645 is about 5042.4840108819. The cubic root of 25426645 is about 294.0557570835.

The spelling of 25426645 in words is "twenty-five million, four hundred twenty-six thousand, six hundred forty-five".