25420461 has 16 divisors (see below), whose sum is σ = 38922240. Its totient is φ = 14595120.

The previous prime is 25420453. The next prime is 25420463. The reversal of 25420461 is 16402452.

It is not a de Polignac number, because 25420461 - 2³ = 25420453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25420463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19645 + ... + 20898.

It is an arithmetic number, because the mean of its divisors is an integer number (2432640).

Almost surely, 2^25420461 is an apocalyptic number.

It is an amenable number.

25420461 is a deficient number, since it is larger than the sum of its proper divisors (13501779).

25420461 is a wasteful number, since it uses less digits than its factorization.

25420461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40576.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 25420461 is about 5041.8707837468. The cubic root of 25420461 is about 294.0319161057.

Subtracting from 25420461 its reverse (16402452), we obtain a square (9018009 = 3003²).

The spelling of 25420461 in words is "twenty-five million, four hundred twenty thousand, four hundred sixty-one".