25125200561 has 2 divisors, whose sum is σ = 25125200562. Its totient is φ = 25125200560.

The previous prime is 25125200539. The next prime is 25125200567. The reversal of 25125200561 is 16500252152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23514382336 + 1610818225 = 153344^2 + 40135^2 .

It is a cyclic number.

It is not a de Polignac number, because 25125200561 - 2¹⁴ = 25125184177 is a prime.

It is not a weakly prime, because it can be changed into another prime (25125200567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12562600280 + 12562600281.

It is an arithmetic number, because the mean of its divisors is an integer number (12562600281).

Almost surely, 2^25125200561 is an apocalyptic number.

It is an amenable number.

25125200561 is a deficient number, since it is larger than the sum of its proper divisors (1).

25125200561 is an equidigital number, since it uses as much as digits as its factorization.

25125200561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 25125200561 in words is "twenty-five billion, one hundred twenty-five million, two hundred thousand, five hundred sixty-one".