25962021 has 12 divisors (see below), whose sum is σ = 37591840. Its totient is φ = 17265960.

The previous prime is 25962019. The next prime is 25962023. The reversal of 25962021 is 12026952.

It is an interprime number because it is at equal distance from previous prime (25962019) and next prime (25962023).

It is not a de Polignac number, because 25962021 - 2¹ = 25962019 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25962023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 666 + ... + 7236.

Almost surely, 2^25962021 is an apocalyptic number.

It is an amenable number.

25962021 is a deficient number, since it is larger than the sum of its proper divisors (11629819).

25962021 is a wasteful number, since it uses less digits than its factorization.

25962021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7016 (or 7013 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 25962021 is about 5095.2940052562. The cubic root of 25962021 is about 296.1052895763.

Adding to 25962021 its reverse (12026952), we get a palindrome (37988973).

The spelling of 25962021 in words is "twenty-five million, nine hundred sixty-two thousand, twenty-one".