25404461 has 4 divisors (see below), whose sum is σ = 26024124. Its totient is φ = 24784800.

The previous prime is 25404451. The next prime is 25404473. The reversal of 25404461 is 16440452.

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 7806436 + 17598025 = 2794^2 + 4195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25404461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25404461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25404451) 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 3 ways as a sum of consecutive naturals, for example, 309770 + ... + 309851.

It is an arithmetic number, because the mean of its divisors is an integer number (6506031).

Almost surely, 2^25404461 is an apocalyptic number.

It is an amenable number.

25404461 is a deficient number, since it is larger than the sum of its proper divisors (619663).

25404461 is an equidigital number, since it uses as much as digits as its factorization.

25404461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619662.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 25404461 is about 5040.2838213736. The cubic root of 25404461 is about 293.9702138673.

The spelling of 25404461 in words is "twenty-five million, four hundred four thousand, four hundred sixty-one".