25758340 has 12 divisors (see below), whose sum is σ = 54092556. Its totient is φ = 10303328.

The previous prime is 25758311. The next prime is 25758347. The reversal of 25758340 is 4385752.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7661824 + 18096516 = 2768^2 + 4254^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25758296 and 25758305.

It is not an unprimeable number, because it can be changed into a prime (25758347) 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, 643939 + ... + 643978.

It is an arithmetic number, because the mean of its divisors is an integer number (4507713).

Almost surely, 2^25758340 is an apocalyptic number.

25758340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25758340 is an abundant number, since it is smaller than the sum of its proper divisors (28334216).

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

25758340 is a wasteful number, since it uses less digits than its factorization.

25758340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287926 (or 1287924 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 25758340 is about 5075.2674806359. The cubic root of 25758340 is about 295.3289063513.

The spelling of 25758340 in words is "twenty-five million, seven hundred fifty-eight thousand, three hundred forty".