25124143969 has 2 divisors, whose sum is σ = 25124143970. Its totient is φ = 25124143968.

The previous prime is 25124143901. The next prime is 25124143987. The reversal of 25124143969 is 96934142152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20511968400 + 4612175569 = 143220^2 + 67913^2 .

It is a cyclic number.

It is not a de Polignac number, because 25124143969 - 2⁷ = 25124143841 is a prime.

It is a super-2 number, since 2×25124143969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25124143999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12562071984 + 12562071985.

It is an arithmetic number, because the mean of its divisors is an integer number (12562071985).

Almost surely, 2^25124143969 is an apocalyptic number.

It is an amenable number.

25124143969 is a deficient number, since it is larger than the sum of its proper divisors (1).

25124143969 is an equidigital number, since it uses as much as digits as its factorization.

25124143969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The spelling of 25124143969 in words is "twenty-five billion, one hundred twenty-four million, one hundred forty-three thousand, nine hundred sixty-nine".