25621266 has 24 divisors (see below), whose sum is σ = 56326032. Its totient is φ = 7763800.

The previous prime is 25621259. The next prime is 25621303. The reversal of 25621266 is 66212652.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16920 + ... + 18371.

It is an arithmetic number, because the mean of its divisors is an integer number (2346918).

Almost surely, 2^25621266 is an apocalyptic number.

25621266 is an abundant number, since it is smaller than the sum of its proper divisors (30704766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25621266 is a wasteful number, since it uses less digits than its factorization.

25621266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35318 (or 35307 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 25621266 is about 5061.7453511610. The cubic root of 25621266 is about 294.8041062768.

It can be divided in two parts, 25621 and 266, that multiplied together give a palindrome (6815186).

The spelling of 25621266 in words is "twenty-five million, six hundred twenty-one thousand, two hundred sixty-six".