25667614969 has 2 divisors, whose sum is σ = 25667614970. Its totient is φ = 25667614968.

The previous prime is 25667614927. The next prime is 25667614979. The reversal of 25667614969 is 96941676652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15347493225 + 10320121744 = 123885^2 + 101588^2 .

It is a cyclic number.

It is not a de Polignac number, because 25667614969 - 2¹³ = 25667606777 is a prime.

It is a super-2 number, since 2×25667614969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25667614909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12833807484 + 12833807485.

It is an arithmetic number, because the mean of its divisors is an integer number (12833807485).

Almost surely, 2^25667614969 is an apocalyptic number.

It is an amenable number.

25667614969 is a deficient number, since it is larger than the sum of its proper divisors (1).

25667614969 is an equidigital number, since it uses as much as digits as its factorization.

25667614969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29393280, while the sum is 61.

The spelling of 25667614969 in words is "twenty-five billion, six hundred sixty-seven million, six hundred fourteen thousand, nine hundred sixty-nine".