25151222489 has 2 divisors, whose sum is σ = 25151222490. Its totient is φ = 25151222488.

The previous prime is 25151222477. The next prime is 25151222519. The reversal of 25151222489 is 98422215152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21867015625 + 3284206864 = 147875^2 + 57308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25151222489 is a prime.

It is not a weakly prime, because it can be changed into another prime (25151222429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12575611244 + 12575611245.

It is an arithmetic number, because the mean of its divisors is an integer number (12575611245).

Almost surely, 2^25151222489 is an apocalyptic number.

It is an amenable number.

25151222489 is a deficient number, since it is larger than the sum of its proper divisors (1).

25151222489 is an equidigital number, since it uses as much as digits as its factorization.

25151222489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 41.

The spelling of 25151222489 in words is "twenty-five billion, one hundred fifty-one million, two hundred twenty-two thousand, four hundred eighty-nine".