25820379 has 12 divisors (see below), whose sum is σ = 40165216. Its totient is φ = 15889392.

The previous prime is 25820323. The next prime is 25820407. The reversal of 25820379 is 97302852.

It is a happy number.

25820379 is a `hidden beast` number, since 2 + 582 + 0 + 3 + 79 = 666.

It is not a de Polignac number, because 25820379 - 2¹² = 25816283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25820479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110227 + ... + 110460.

Almost surely, 2^25820379 is an apocalyptic number.

25820379 is a deficient number, since it is larger than the sum of its proper divisors (14344837).

25820379 is a wasteful number, since it uses less digits than its factorization.

25820379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220706 (or 220703 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 25820379 is about 5081.3756995522. The cubic root of 25820379 is about 295.5658162896.

The spelling of 25820379 in words is "twenty-five million, eight hundred twenty thousand, three hundred seventy-nine".