25877890 has 8 divisors (see below), whose sum is σ = 46580220. Its totient is φ = 10351152.

The previous prime is 25877881. The next prime is 25877899. The reversal of 25877890 is 9877852.

It is an interprime number because it is at equal distance from previous prime (25877881) and next prime (25877899).

It can be written as a sum of positive squares in 2 ways, for example, as 25674489 + 203401 = 5067^2 + 451^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 25877890.

It is not an unprimeable number, because it can be changed into a prime (25877899) 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, 1293885 + ... + 1293904.

Almost surely, 2^25877890 is an apocalyptic number.

25877890 is a deficient number, since it is larger than the sum of its proper divisors (20702330).

25877890 is a wasteful number, since it uses less digits than its factorization.

25877890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587796.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 25877890 is about 5087.0315509145. The cubic root of 25877890 is about 295.7850963252.

The spelling of 25877890 in words is "twenty-five million, eight hundred seventy-seven thousand, eight hundred ninety".