25772617 has 4 divisors (see below), whose sum is σ = 27755140. Its totient is φ = 23790096.

The previous prime is 25772597. The next prime is 25772623. The reversal of 25772617 is 71627752.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10374841 + 15397776 = 3221^2 + 3924^2 .

It is a cyclic number.

It is not a de Polignac number, because 25772617 - 2¹⁹ = 25248329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25772647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991242 + ... + 991267.

It is an arithmetic number, because the mean of its divisors is an integer number (6938785).

Almost surely, 2^25772617 is an apocalyptic number.

It is an amenable number.

25772617 is a deficient number, since it is larger than the sum of its proper divisors (1982523).

25772617 is a wasteful number, since it uses less digits than its factorization.

25772617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982522.

The product of its digits is 41160, while the sum is 37.

The square root of 25772617 is about 5076.6738126454. The cubic root of 25772617 is about 295.3834599707.

The spelling of 25772617 in words is "twenty-five million, seven hundred seventy-two thousand, six hundred seventeen".