25432641 has 36 divisors (see below), whose sum is σ = 41565888. Its totient is φ = 14949792.

The previous prime is 25432619. The next prime is 25432699. The reversal of 25432641 is 14623452.

It is not a de Polignac number, because 25432641 - 2⁵ = 25432609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25432441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 34620 + ... + 35346.

It is an arithmetic number, because the mean of its divisors is an integer number (1154608).

Almost surely, 2^25432641 is an apocalyptic number.

It is an amenable number.

25432641 is a deficient number, since it is larger than the sum of its proper divisors (16133247).

25432641 is a wasteful number, since it uses less digits than its factorization.

25432641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782 (or 766 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 25432641 is about 5043.0785240763. The cubic root of 25432641 is about 294.0788695802.

It can be divided in two parts, 2543 and 2641, that added together give a square (5184 = 72²).

The spelling of 25432641 in words is "twenty-five million, four hundred thirty-two thousand, six hundred forty-one".