61257306630225 has 48 divisors (see below), whose sum is σ = 101675946600704. Its totient is φ = 32542585920000.

The previous prime is 61257306630193. The next prime is 61257306630241. The reversal of 61257306630225 is 52203660375216.

It is not a de Polignac number, because 61257306630225 - 2⁵ = 61257306630193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31474200 + ... + 33363750.

Almost surely, 2^{61257306630225} is an apocalyptic number.

It is an amenable number.

61257306630225 is a deficient number, since it is larger than the sum of its proper divisors (40418639970479).

61257306630225 is a wasteful number, since it uses less digits than its factorization.

61257306630225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891258 (or 1891253 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 48.

The spelling of 61257306630225 in words is "sixty-one trillion, two hundred fifty-seven billion, three hundred six million, six hundred thirty thousand, two hundred twenty-five".