25621672 has 8 divisors (see below), whose sum is σ = 48040650. Its totient is φ = 12810832.

The previous prime is 25621667. The next prime is 25621691. The reversal of 25621672 is 27612652.

It can be written as a sum of positive squares in only one way, i.e., 20304036 + 5317636 = 4506^2 + 2306^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1601347 + ... + 1601362.

Almost surely, 2^25621672 is an apocalyptic number.

It is an amenable number.

25621672 is a deficient number, since it is larger than the sum of its proper divisors (22418978).

25621672 is a wasteful number, since it uses less digits than its factorization.

25621672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202715 (or 3202711 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 25621672 is about 5061.7854557458. The cubic root of 25621672 is about 294.8056634447.

The spelling of 25621672 in words is "twenty-five million, six hundred twenty-one thousand, six hundred seventy-two".