25275440 has 40 divisors (see below), whose sum is σ = 60360720. Its totient is φ = 9835776.

The previous prime is 25275427. The next prime is 25275451. The reversal of 25275440 is 4457252.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1310 + ... + 7229.

It is an arithmetic number, because the mean of its divisors is an integer number (1509018).

Almost surely, 2^25275440 is an apocalyptic number.

25275440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25275440 is an abundant number, since it is smaller than the sum of its proper divisors (35085280).

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

25275440 is a wasteful number, since it uses less digits than its factorization.

25275440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8589 (or 8583 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 25275440 is about 5027.4685478877. The cubic root of 25275440 is about 293.4717092766.

The spelling of 25275440 in words is "twenty-five million, two hundred seventy-five thousand, four hundred forty".