25436061 has 24 divisors (see below), whose sum is σ = 42179904. Its totient is φ = 14469120.

The previous prime is 25436051. The next prime is 25436069. The reversal of 25436061 is 16063452.

25436061 is a `hidden beast` number, since 2 + 54 + 3 + 606 + 1 = 666.

It is not a de Polignac number, because 25436061 - 2¹⁴ = 25419677 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 (25436069) 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 23 ways as a sum of consecutive naturals, for example, 15406 + ... + 16976.

It is an arithmetic number, because the mean of its divisors is an integer number (1757496).

Almost surely, 2^25436061 is an apocalyptic number.

25436061 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25436061 is a deficient number, since it is larger than the sum of its proper divisors (16743843).

25436061 is a wasteful number, since it uses less digits than its factorization.

25436061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841 (or 1838 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 25436061 is about 5043.4175912768. The cubic root of 25436061 is about 294.0920508651.

It can be divided in two parts, 254 and 36061, that added together give a triangular number (36315 = T₂₆₉).

The spelling of 25436061 in words is "twenty-five million, four hundred thirty-six thousand, sixty-one".