25318461 has 16 divisors (see below), whose sum is σ = 38799488. Its totient is φ = 14385600.

The previous prime is 25318451. The next prime is 25318481. The reversal of 25318461 is 16481352.

It is not a de Polignac number, because 25318461 - 2⁷ = 25318333 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25318451) 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 15 ways as a sum of consecutive naturals, for example, 471 + ... + 7131.

It is an arithmetic number, because the mean of its divisors is an integer number (2424968).

Almost surely, 2^25318461 is an apocalyptic number.

25318461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25318461 is a deficient number, since it is larger than the sum of its proper divisors (13481027).

25318461 is a wasteful number, since it uses less digits than its factorization.

25318461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6852.

The product of its digits is 5760, while the sum is 30.

The square root of 25318461 is about 5031.7453234439. The cubic root of 25318461 is about 293.6381196994.

The spelling of 25318461 in words is "twenty-five million, three hundred eighteen thousand, four hundred sixty-one".