25977725 has 6 divisors (see below), whose sum is σ = 32212410. Its totient is φ = 20782160.

The previous prime is 25977713. The next prime is 25977727. The reversal of 25977725 is 52777952.

It can be written as a sum of positive squares in 3 ways, for example, as 465124 + 25512601 = 682^2 + 5051^2 .

It is not a de Polignac number, because 25977725 - 2⁶ = 25977661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25977727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 519530 + ... + 519579.

It is an arithmetic number, because the mean of its divisors is an integer number (5368735).

Almost surely, 2^25977725 is an apocalyptic number.

25977725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25977725 is a deficient number, since it is larger than the sum of its proper divisors (6234685).

25977725 is a wasteful number, since it uses less digits than its factorization.

25977725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039119 (or 1039114 counting only the distinct ones).

The product of its digits is 308700, while the sum is 44.

The square root of 25977725 is about 5096.8348021100. The cubic root of 25977725 is about 296.1649806177.

The spelling of 25977725 in words is "twenty-five million, nine hundred seventy-seven thousand, seven hundred twenty-five".