225726001537 has 2 divisors, whose sum is σ = 225726001538. Its totient is φ = 225726001536.

The previous prime is 225726001519. The next prime is 225726001559. The reversal of 225726001537 is 735100627522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133574899441 + 92151102096 = 365479^2 + 303564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225726001537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225726001537.

It is not a weakly prime, because it can be changed into another prime (225726001507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112863000768 + 112863000769.

It is an arithmetic number, because the mean of its divisors is an integer number (112863000769).

Almost surely, 2^225726001537 is an apocalyptic number.

It is an amenable number.

225726001537 is a deficient number, since it is larger than the sum of its proper divisors (1).

225726001537 is an equidigital number, since it uses as much as digits as its factorization.

225726001537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 225726001537 in words is "two hundred twenty-five billion, seven hundred twenty-six million, one thousand, five hundred thirty-seven".