25380861 has 8 divisors (see below), whose sum is σ = 36917664. Its totient is φ = 15382320.

The previous prime is 25380841. The next prime is 25380863. The reversal of 25380861 is 16808352.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25380861 - 2⁹ = 25380349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 769117 = 25380861 / (2 + 5 + 3 + 8 + 0 + 8 + 6 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25380863) 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, 384526 + ... + 384591.

It is an arithmetic number, because the mean of its divisors is an integer number (4614708).

Almost surely, 2^25380861 is an apocalyptic number.

It is an amenable number.

25380861 is a deficient number, since it is larger than the sum of its proper divisors (11536803).

25380861 is a wasteful number, since it uses less digits than its factorization.

25380861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769131.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 25380861 is about 5037.9421394057. The cubic root of 25380861 is about 293.8791557593.

The spelling of 25380861 in words is "twenty-five million, three hundred eighty thousand, eight hundred sixty-one".