25412021 has 2 divisors, whose sum is σ = 25412022. Its totient is φ = 25412020.

The previous prime is 25411999. The next prime is 25412029. The reversal of 25412021 is 12021452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18062500 + 7349521 = 4250^2 + 2711^2 .

It is a cyclic number.

It is not a de Polignac number, because 25412021 - 2¹⁰ = 25410997 is a prime.

It is a super-2 number, since 2×25412021² = 1291541622608882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25412029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12706010 + 12706011.

It is an arithmetic number, because the mean of its divisors is an integer number (12706011).

Almost surely, 2^25412021 is an apocalyptic number.

It is an amenable number.

25412021 is a deficient number, since it is larger than the sum of its proper divisors (1).

25412021 is an equidigital number, since it uses as much as digits as its factorization.

25412021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 25412021 is about 5041.0337233548. The cubic root of 25412021 is about 293.9993714025. Note that the first 3 decimals are identical.

Adding to 25412021 its reverse (12021452), we get a palindrome (37433473).

The spelling of 25412021 in words is "twenty-five million, four hundred twelve thousand, twenty-one".