61047036225 has 72 divisors (see below), whose sum is σ = 125513544000. Its totient is φ = 27784114560.

The previous prime is 61047036221. The next prime is 61047036251. The reversal of 61047036225 is 52263074016.

61047036225 is a `hidden beast` number, since 610 + 4 + 7 + 0 + 36 + 2 + 2 + 5 = 666.

It is not a de Polignac number, because 61047036225 - 2² = 61047036221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61047036225.

It is not an unprimeable number, because it can be changed into a prime (61047036221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 272151 + ... + 442899.

Almost surely, 2^61047036225 is an apocalyptic number.

It is an amenable number.

61047036225 is an abundant number, since it is smaller than the sum of its proper divisors (64466507775).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61047036225 is a wasteful number, since it uses less digits than its factorization.

61047036225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170999 (or 170991 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 61047036225 in words is "sixty-one billion, forty-seven million, thirty-six thousand, two hundred twenty-five".