25454040 has 32 divisors (see below), whose sum is σ = 76362480. Its totient is φ = 6787712.

The previous prime is 25454021. The next prime is 25454057. The reversal of 25454040 is 4045452.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 25454040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105939 + ... + 106178.

Almost surely, 2^25454040 is an apocalyptic number.

25454040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25454040 is an abundant number, since it is smaller than the sum of its proper divisors (50908440).

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

25454040 is a wasteful number, since it uses less digits than its factorization.

25454040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212131 (or 212127 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 25454040 is about 5045.1996987235. The cubic root of 25454040 is about 294.1613256856.

Adding to 25454040 its reverse (4045452), we get a palindrome (29499492).

The spelling of 25454040 in words is "twenty-five million, four hundred fifty-four thousand, forty".