25338631 has 4 divisors (see below), whose sum is σ = 25599952. Its totient is φ = 25077312.

The previous prime is 25338629. The next prime is 25338637. The reversal of 25338631 is 13683352.

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 25338631 - 2¹ = 25338629 is a prime.

It is a super-2 number, since 2×25338631² = 1284092441908322, 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 = 25338593 and 25338602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25338637) 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, 130515 + ... + 130708.

It is an arithmetic number, because the mean of its divisors is an integer number (6399988).

Almost surely, 2^25338631 is an apocalyptic number.

25338631 is a deficient number, since it is larger than the sum of its proper divisors (261321).

25338631 is an equidigital number, since it uses as much as digits as its factorization.

25338631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261320.

The product of its digits is 12960, while the sum is 31.

The square root of 25338631 is about 5033.7491991556. The cubic root of 25338631 is about 293.7160747904.

The spelling of 25338631 in words is "twenty-five million, three hundred thirty-eight thousand, six hundred thirty-one".