61244255064225 has 12 divisors (see below), whose sum is σ = 101257168372976. Its totient is φ = 32663602700880.

The previous prime is 61244255064217. The next prime is 61244255064229. The reversal of 61244255064225 is 52246055244216.

It is not a de Polignac number, because 61244255064225 - 2³ = 61244255064217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61244255064229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 408295033687 + ... + 408295033836.

Almost surely, 2^{61244255064225} is an apocalyptic number.

It is an amenable number.

61244255064225 is a deficient number, since it is larger than the sum of its proper divisors (40012913308751).

61244255064225 is a wasteful number, since it uses less digits than its factorization.

61244255064225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816590067536 (or 816590067531 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 48.

The spelling of 61244255064225 in words is "sixty-one trillion, two hundred forty-four billion, two hundred fifty-five million, sixty-four thousand, two hundred twenty-five".