64225025461 has 2 divisors, whose sum is σ = 64225025462. Its totient is φ = 64225025460.

The previous prime is 64225025401. The next prime is 64225025467. The reversal of 64225025461 is 16452052246.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64049992561 + 175032900 = 253081^2 + 13230^2 .

It is a cyclic number.

It is not a de Polignac number, because 64225025461 - 2²¹ = 64222928309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64225025461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64225025467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32112512730 + 32112512731.

It is an arithmetic number, because the mean of its divisors is an integer number (32112512731).

Almost surely, 2^64225025461 is an apocalyptic number.

It is an amenable number.

64225025461 is a deficient number, since it is larger than the sum of its proper divisors (1).

64225025461 is an equidigital number, since it uses as much as digits as its factorization.

64225025461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 64225025461 in words is "sixty-four billion, two hundred twenty-five million, twenty-five thousand, four hundred sixty-one".