25773940 has 12 divisors (see below), whose sum is σ = 54125316. Its totient is φ = 10309568.

The previous prime is 25773919. The next prime is 25773949. The reversal of 25773940 is 4937752.

It can be written as a sum of positive squares in 2 ways, for example, as 2944656 + 22829284 = 1716^2 + 4778^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25773940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25773949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644329 + ... + 644368.

It is an arithmetic number, because the mean of its divisors is an integer number (4510443).

Almost surely, 2^25773940 is an apocalyptic number.

25773940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25773940 is an abundant number, since it is smaller than the sum of its proper divisors (28351376).

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

25773940 is a wasteful number, since it uses less digits than its factorization.

25773940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288706 (or 1288704 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 25773940 is about 5076.8041128253. The cubic root of 25773940 is about 295.3885142450.

The spelling of 25773940 in words is "twenty-five million, seven hundred seventy-three thousand, nine hundred forty".