61025797156 has 9 divisors (see below), whose sum is σ = 106796009649. Its totient is φ = 30512651544.

The previous prime is 61025797127. The next prime is 61025797163. The reversal of 61025797156 is 65179752016.

The square root of 61025797156 is 247034.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 24700900 + 61001096256 = 4970^2 + 246984^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 432310 + ... + 555826.

Almost surely, 2^61025797156 is an apocalyptic number.

61025797156 is the 247034-th square number.

It is an amenable number.

61025797156 is a deficient number, since it is larger than the sum of its proper divisors (45770212493).

61025797156 is an frugal number, since it uses more digits than its factorization.

61025797156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247038 (or 123519 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 49.

Multiplying 61025797156 by its sum of digits (49), we get a square (2990264060644 = 1729238²).

The spelling of 61025797156 in words is "sixty-one billion, twenty-five million, seven hundred ninety-seven thousand, one hundred fifty-six".