25433040 has 40 divisors (see below), whose sum is σ = 78843168. Its totient is φ = 6782080.

The previous prime is 25433033. The next prime is 25433041. The reversal of 25433040 is 4033452.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 25432998 and 25433016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25433041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52746 + ... + 53225.

Almost surely, 2^25433040 is an apocalyptic number.

25433040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25433040 is an abundant number, since it is smaller than the sum of its proper divisors (53410128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25433040 is a wasteful number, since it uses less digits than its factorization.

25433040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105987 (or 105981 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 25433040 is about 5043.1180830911. The cubic root of 25433040 is about 294.0804074577.

Adding to 25433040 its reverse (4033452), we get a palindrome (29466492).

The spelling of 25433040 in words is "twenty-five million, four hundred thirty-three thousand, forty".