25020889 has 4 divisors (see below), whose sum is σ = 26492724. Its totient is φ = 23549056.

The previous prime is 25020887. The next prime is 25020893. The reversal of 25020889 is 98802052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21780889 + 3240000 = 4667^2 + 1800^2 .

It is a cyclic number.

It is not a de Polignac number, because 25020889 - 2¹ = 25020887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25020887) 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, 735892 + ... + 735925.

It is an arithmetic number, because the mean of its divisors is an integer number (6623181).

Almost surely, 2^25020889 is an apocalyptic number.

It is an amenable number.

25020889 is a deficient number, since it is larger than the sum of its proper divisors (1471835).

25020889 is a wasteful number, since it uses less digits than its factorization.

25020889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471834.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 25020889 is about 5002.0884638319. The cubic root of 25020889 is about 292.4831908913.

The spelling of 25020889 in words is "twenty-five million, twenty thousand, eight hundred eighty-nine".