61356225 has 48 divisors (see below), whose sum is σ = 122055680. Its totient is φ = 26568000.

The previous prime is 61356221. The next prime is 61356259. The reversal of 61356225 is 52265316.

It is not a de Polignac number, because 61356225 - 2² = 61356221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61356192 and 61356201.

It is not an unprimeable number, because it can be changed into a prime (61356221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6900 + ... + 13050.

Almost surely, 2^61356225 is an apocalyptic number.

It is an amenable number.

61356225 is a deficient number, since it is larger than the sum of its proper divisors (60699455).

61356225 is a wasteful number, since it uses less digits than its factorization.

61356225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6190 (or 6185 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 61356225 is about 7833.0214476918. The cubic root of 61356225 is about 394.4145040350.

Subtracting from 61356225 its reverse (52265316), we obtain a palindrome (9090909).

The spelling of 61356225 in words is "sixty-one million, three hundred fifty-six thousand, two hundred twenty-five".