25499461 has 8 divisors (see below), whose sum is σ = 27615224. Its totient is φ = 23405760.

The previous prime is 25499459. The next prime is 25499471. The reversal of 25499461 is 16499452.

It can be written as a sum of positive squares in 4 ways, for example, as 2160900 + 23338561 = 1470^2 + 4831^2 .

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 25499461 - 2¹ = 25499459 is a prime.

It is a super-2 number, since 2×25499461² = 1300445022581042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25499471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3066 + ... + 7771.

It is an arithmetic number, because the mean of its divisors is an integer number (3451903).

Almost surely, 2^25499461 is an apocalyptic number.

It is an amenable number.

25499461 is a deficient number, since it is larger than the sum of its proper divisors (2115763).

25499461 is a wasteful number, since it uses less digits than its factorization.

25499461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11031.

The product of its digits is 77760, while the sum is 40.

The square root of 25499461 is about 5049.6990999465. The cubic root of 25499461 is about 294.3361919952.

Subtracting from 25499461 its reverse (16499452), we obtain a palindrome (9000009).

The spelling of 25499461 in words is "twenty-five million, four hundred ninety-nine thousand, four hundred sixty-one".