25062721 has 2 divisors, whose sum is σ = 25062722. Its totient is φ = 25062720.

The previous prime is 25062707. The next prime is 25062733. The reversal of 25062721 is 12726052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23658496 + 1404225 = 4864^2 + 1185^2 .

It is a cyclic number.

It is not a de Polignac number, because 25062721 - 2¹⁹ = 24538433 is a prime.

It is not a weakly prime, because it can be changed into another prime (25062701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12531360 + 12531361.

It is an arithmetic number, because the mean of its divisors is an integer number (12531361).

Almost surely, 2^25062721 is an apocalyptic number.

It is an amenable number.

25062721 is a deficient number, since it is larger than the sum of its proper divisors (1).

25062721 is an equidigital number, since it uses as much as digits as its factorization.

25062721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 25062721 is about 5006.2681710032. The cubic root of 25062721 is about 292.6460993659.

Adding to 25062721 its reverse (12726052), we get a palindrome (37788773).

The spelling of 25062721 in words is "twenty-five million, sixty-two thousand, seven hundred twenty-one".