61453536025 has 24 divisors (see below), whose sum is σ = 87126923520. Its totient is φ = 42120946560.

The previous prime is 61453536017. The next prime is 61453536029. The reversal of 61453536025 is 52063535416.

It is not a de Polignac number, because 61453536025 - 2³ = 61453536017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61453536029) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 325536 + ... + 478414.

It is an arithmetic number, because the mean of its divisors is an integer number (3630288480).

Almost surely, 2^61453536025 is an apocalyptic number.

It is an amenable number.

61453536025 is a deficient number, since it is larger than the sum of its proper divisors (25673387495).

61453536025 is a wasteful number, since it uses less digits than its factorization.

61453536025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155193 (or 155188 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 61453536025 in words is "sixty-one billion, four hundred fifty-three million, five hundred thirty-six thousand, twenty-five".