25066631 has 4 divisors (see below), whose sum is σ = 25875264. Its totient is φ = 24258000.

The previous prime is 25066627. The next prime is 25066633. The reversal of 25066631 is 13666052.

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

It is a cyclic number.

It is not a de Polignac number, because 25066631 - 2² = 25066627 is a prime.

It is a super-2 number, since 2×25066631² = 1256671979380322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25066594 and 25066603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25066633) 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, 404270 + ... + 404331.

It is an arithmetic number, because the mean of its divisors is an integer number (6468816).

Almost surely, 2^25066631 is an apocalyptic number.

25066631 is a deficient number, since it is larger than the sum of its proper divisors (808633).

25066631 is an equidigital number, since it uses as much as digits as its factorization.

25066631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808632.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 25066631 is about 5006.6586662164. The cubic root of 25066631 is about 292.6613170106.

The spelling of 25066631 in words is "twenty-five million, sixty-six thousand, six hundred thirty-one".