25013617 has 2 divisors, whose sum is σ = 25013618. Its totient is φ = 25013616.

The previous prime is 25013587. The next prime is 25013623. The reversal of 25013617 is 71631052.

25013617 is nontrivially palindromic in base 16.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23415921 + 1597696 = 4839^2 + 1264^2 .

It is a cyclic number.

It is not a de Polignac number, because 25013617 - 2²³ = 16625009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25013591 and 25013600.

It is not a weakly prime, because it can be changed into another prime (25013017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12506808 + 12506809.

It is an arithmetic number, because the mean of its divisors is an integer number (12506809).

Almost surely, 2^25013617 is an apocalyptic number.

It is an amenable number.

25013617 is a deficient number, since it is larger than the sum of its proper divisors (1).

25013617 is an equidigital number, since it uses as much as digits as its factorization.

25013617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 25013617 is about 5001.3615146278. The cubic root of 25013617 is about 292.4548526515.

Adding to 25013617 its reverse (71631052), we get a palindrome (96644669).

The spelling of 25013617 in words is "twenty-five million, thirteen thousand, six hundred seventeen".