25016501 has 2 divisors, whose sum is σ = 25016502. Its totient is φ = 25016500.

The previous prime is 25016471. The next prime is 25016513. The reversal of 25016501 is 10561052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24512401 + 504100 = 4951^2 + 710^2 .

It is a cyclic number.

It is not a de Polignac number, because 25016501 - 2¹⁸ = 24754357 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25016581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12508250 + 12508251.

It is an arithmetic number, because the mean of its divisors is an integer number (12508251).

Almost surely, 2^25016501 is an apocalyptic number.

It is an amenable number.

25016501 is a deficient number, since it is larger than the sum of its proper divisors (1).

25016501 is an equidigital number, since it uses as much as digits as its factorization.

25016501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 25016501 is about 5001.6498278068. The cubic root of 25016501 is about 292.4660919614.

Adding to 25016501 its reverse (10561052), we get a palindrome (35577553).

The spelling of 25016501 in words is "twenty-five million, sixteen thousand, five hundred one".