25474840 has 32 divisors (see below), whose sum is σ = 60691680. Its totient is φ = 9590272.

The previous prime is 25474837. The next prime is 25474849. The reversal of 25474840 is 4847452.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 25474796 and 25474805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25474849) by changing a digit.

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, 18052 + ... + 19411.

It is an arithmetic number, because the mean of its divisors is an integer number (1896615).

Almost surely, 2^25474840 is an apocalyptic number.

25474840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25474840 is an abundant number, since it is smaller than the sum of its proper divisors (35216840).

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

25474840 is a wasteful number, since it uses less digits than its factorization.

25474840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37491 (or 37487 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 25474840 is about 5047.2606431608. The cubic root of 25474840 is about 294.2414294035.

The spelling of 25474840 in words is "twenty-five million, four hundred seventy-four thousand, eight hundred forty".