25873945 has 8 divisors (see below), whose sum is σ = 32119560. Its totient is φ = 19985280.

The previous prime is 25873937. The next prime is 25873961. The reversal of 25873945 is 54937852.

It can be written as a sum of positive squares in 4 ways, for example, as 793881 + 25080064 = 891^2 + 5008^2 .

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

It is not a de Polignac number, because 25873945 - 2³ = 25873937 is a prime.

It is a super-2 number, since 2×25873945² = 1338922059726050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89076 + ... + 89365.

It is an arithmetic number, because the mean of its divisors is an integer number (4014945).

Almost surely, 2^25873945 is an apocalyptic number.

It is an amenable number.

25873945 is a deficient number, since it is larger than the sum of its proper divisors (6245615).

25873945 is a wasteful number, since it uses less digits than its factorization.

25873945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178475.

The product of its digits is 302400, while the sum is 43.

The square root of 25873945 is about 5086.6437854444. The cubic root of 25873945 is about 295.7700650701.

The spelling of 25873945 in words is "twenty-five million, eight hundred seventy-three thousand, nine hundred forty-five".