25016513 has 2 divisors, whose sum is σ = 25016514. Its totient is φ = 25016512.

The previous prime is 25016501. The next prime is 25016543. The reversal of 25016513 is 31561052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24522304 + 494209 = 4952^2 + 703^2 .

It is a cyclic number.

It is not a de Polignac number, because 25016513 - 2¹⁰ = 25015489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25016543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12508256 + 12508257.

It is an arithmetic number, because the mean of its divisors is an integer number (12508257).

Almost surely, 2^25016513 is an apocalyptic number.

It is an amenable number.

25016513 is a deficient number, since it is larger than the sum of its proper divisors (1).

25016513 is an equidigital number, since it uses as much as digits as its factorization.

25016513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 25016513 is about 5001.6510274108. The cubic root of 25016513 is about 292.4661387251.

Adding to 25016513 its reverse (31561052), we get a palindrome (56577565).

The spelling of 25016513 in words is "twenty-five million, sixteen thousand, five hundred thirteen".