25405430 has 16 divisors (see below), whose sum is σ = 47205504. Its totient is φ = 9834240.

The previous prime is 25405411. The next prime is 25405441. The reversal of 25405430 is 3450452.

It is a junction number, because it is equal to n+sod(n) for n = 25405396 and 25405405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40667 + ... + 41286.

It is an arithmetic number, because the mean of its divisors is an integer number (2950344).

Almost surely, 2^25405430 is an apocalyptic number.

25405430 is a deficient number, since it is larger than the sum of its proper divisors (21800074).

25405430 is a wasteful number, since it uses less digits than its factorization.

25405430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81991.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 25405430 is about 5040.3799459961. The cubic root of 25405430 is about 293.9739514460.

Adding to 25405430 its reverse (3450452), we get a palindrome (28855882).

The spelling of 25405430 in words is "twenty-five million, four hundred five thousand, four hundred thirty".