25396780 has 24 divisors (see below), whose sum is σ = 53534880. Its totient is φ = 10120320.

The previous prime is 25396769. The next prime is 25396783. The reversal of 25396780 is 8769352.

It is a super-3 number, since 3×25396780³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25396783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3361 + ... + 7879.

It is an arithmetic number, because the mean of its divisors is an integer number (2230620).

Almost surely, 2^25396780 is an apocalyptic number.

25396780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25396780 is an abundant number, since it is smaller than the sum of its proper divisors (28138100).

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

25396780 is a wasteful number, since it uses less digits than its factorization.

25396780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809 (or 4807 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 25396780 is about 5039.5218027110. The cubic root of 25396780 is about 293.9405837324.

The spelling of 25396780 in words is "twenty-five million, three hundred ninety-six thousand, seven hundred eighty".