25214861 has 12 divisors (see below), whose sum is σ = 29606940. Its totient is φ = 21409920.

The previous prime is 25214851. The next prime is 25214863. The reversal of 25214861 is 16841252.

It can be written as a sum of positive squares in 2 ways, for example, as 15642025 + 9572836 = 3955^2 + 3094^2 .

It is not a de Polignac number, because 25214861 - 2¹⁸ = 24952717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25214863) 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 11 ways as a sum of consecutive naturals, for example, 2981 + ... + 7701.

It is an arithmetic number, because the mean of its divisors is an integer number (2467245).

Almost surely, 2^25214861 is an apocalyptic number.

It is an amenable number.

25214861 is a deficient number, since it is larger than the sum of its proper divisors (4392079).

25214861 is a wasteful number, since it uses less digits than its factorization.

25214861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844 (or 4837 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 25214861 is about 5021.4401320737. The cubic root of 25214861 is about 293.2370619278.

The spelling of 25214861 in words is "twenty-five million, two hundred fourteen thousand, eight hundred sixty-one".