25352400709 has 2 divisors, whose sum is σ = 25352400710. Its totient is φ = 25352400708.

The previous prime is 25352400683. The next prime is 25352400751. The reversal of 25352400709 is 90700425352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15699338209 + 9653062500 = 125297^2 + 98250^2 .

It is a cyclic number.

It is not a de Polignac number, because 25352400709 - 2⁷ = 25352400581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25352403709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12676200354 + 12676200355.

It is an arithmetic number, because the mean of its divisors is an integer number (12676200355).

Almost surely, 2^25352400709 is an apocalyptic number.

It is an amenable number.

25352400709 is a deficient number, since it is larger than the sum of its proper divisors (1).

25352400709 is an equidigital number, since it uses as much as digits as its factorization.

25352400709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 25352400709 in words is "twenty-five billion, three hundred fifty-two million, four hundred thousand, seven hundred nine".