25251365233 has 2 divisors, whose sum is σ = 25251365234. Its totient is φ = 25251365232.

The previous prime is 25251365159. The next prime is 25251365261. The reversal of 25251365233 is 33256315252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16420628449 + 8830736784 = 128143^2 + 93972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25251365233 is a prime.

It is a super-2 number, since 2×25251365233² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25251365192 and 25251365201.

It is not a weakly prime, because it can be changed into another prime (25251365273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12625682616 + 12625682617.

It is an arithmetic number, because the mean of its divisors is an integer number (12625682617).

Almost surely, 2^25251365233 is an apocalyptic number.

It is an amenable number.

25251365233 is a deficient number, since it is larger than the sum of its proper divisors (1).

25251365233 is an equidigital number, since it uses as much as digits as its factorization.

25251365233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 37.

The spelling of 25251365233 in words is "twenty-five billion, two hundred fifty-one million, three hundred sixty-five thousand, two hundred thirty-three".