25751380 has 12 divisors (see below), whose sum is σ = 54077940. Its totient is φ = 10300544.

The previous prime is 25751377. The next prime is 25751381. The reversal of 25751380 is 8315752.

It can be written as a sum of positive squares in 2 ways, for example, as 6091024 + 19660356 = 2468^2 + 4434^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25751381) by changing a digit.

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, 643765 + ... + 643804.

It is an arithmetic number, because the mean of its divisors is an integer number (4506495).

Almost surely, 2^25751380 is an apocalyptic number.

25751380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25751380 is an abundant number, since it is smaller than the sum of its proper divisors (28326560).

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

25751380 is a wasteful number, since it uses less digits than its factorization.

25751380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287578 (or 1287576 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 25751380 is about 5074.5817561647. The cubic root of 25751380 is about 295.3023042961.

The spelling of 25751380 in words is "twenty-five million, seven hundred fifty-one thousand, three hundred eighty".