61026727225 has 12 divisors (see below), whose sum is σ = 76802593744. Its totient is φ = 48092703120.

The previous prime is 61026727219. The next prime is 61026727243. The reversal of 61026727225 is 52272762016.

It is a de Polignac number, because none of the positive numbers 2^k-61026727225 is a prime.

It is a super-2 number, since 2×61026727225² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18215259 + ... + 18218608.

Almost surely, 2^61026727225 is an apocalyptic number.

It is an amenable number.

61026727225 is a deficient number, since it is larger than the sum of its proper divisors (15775866519).

61026727225 is a wasteful number, since it uses less digits than its factorization.

61026727225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36433944 (or 36433939 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 61026727225 in words is "sixty-one billion, twenty-six million, seven hundred twenty-seven thousand, two hundred twenty-five".