25946890 has 8 divisors (see below), whose sum is σ = 46704420. Its totient is φ = 10378752.

The previous prime is 25946887. The next prime is 25946897. The reversal of 25946890 is 9864952.

It can be written as a sum of positive squares in 2 ways, for example, as 24196561 + 1750329 = 4919^2 + 1323^2 .

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

It is a super-2 number, since 2×25946890² = 1346482201344200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25946897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1297335 + ... + 1297354.

Almost surely, 2^25946890 is an apocalyptic number.

25946890 is a deficient number, since it is larger than the sum of its proper divisors (20757530).

25946890 is a wasteful number, since it uses less digits than its factorization.

25946890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594696.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 25946890 is about 5093.8089873885. The cubic root of 25946890 is about 296.0477537393.

The spelling of 25946890 in words is "twenty-five million, nine hundred forty-six thousand, eight hundred ninety".