25974481 has 8 divisors (see below), whose sum is σ = 28729064. Its totient is φ = 23328000.

The previous prime is 25974479. The next prime is 25974527. The reversal of 25974481 is 18447952.

It can be written as a sum of positive squares in 4 ways, for example, as 1915456 + 24059025 = 1384^2 + 4905^2 .

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

It is a 6-Lehmer number, since φ(25974481) divides (25974481-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 25974481 - 2¹ = 25974479 is a prime.

It is a super-2 number, since 2×25974481² = 1349347326438722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25971481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26520 + ... + 27481.

It is an arithmetic number, because the mean of its divisors is an integer number (3591133).

Almost surely, 2^25974481 is an apocalyptic number.

It is an amenable number.

25974481 is a deficient number, since it is larger than the sum of its proper divisors (2754583).

25974481 is a wasteful number, since it uses less digits than its factorization.

25974481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54051.

The product of its digits is 80640, while the sum is 40.

The square root of 25974481 is about 5096.5165554524. The cubic root of 25974481 is about 296.1526521171.

The spelling of 25974481 in words is "twenty-five million, nine hundred seventy-four thousand, four hundred eighty-one".