25345940 has 12 divisors (see below), whose sum is σ = 53226516. Its totient is φ = 10138368.

The previous prime is 25345939. The next prime is 25345961. The reversal of 25345940 is 4954352.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7739524 + 17606416 = 2782^2 + 4196^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25345897 and 25345906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633629 + ... + 633668.

It is an arithmetic number, because the mean of its divisors is an integer number (4435543).

Almost surely, 2^25345940 is an apocalyptic number.

25345940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25345940 is an abundant number, since it is smaller than the sum of its proper divisors (27880576).

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

25345940 is a wasteful number, since it uses less digits than its factorization.

25345940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267306 (or 1267304 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 25345940 is about 5034.4751464279. The cubic root of 25345940 is about 293.7443131538.

The spelling of 25345940 in words is "twenty-five million, three hundred forty-five thousand, nine hundred forty".