61225641 has 18 divisors (see below), whose sum is σ = 91603070. Its totient is φ = 39404736.

The previous prime is 61225613. The next prime is 61225693. The reversal of 61225641 is 14652216.

61225641 is a `hidden beast` number, since 6 + 12 + 2 + 5 + 641 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 385641 + 60840000 = 621^2 + 7800^2 .

It is not a de Polignac number, because 61225641 - 2¹⁰ = 61224617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61225141) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3525 + ... + 11613.

Almost surely, 2^61225641 is an apocalyptic number.

It is an amenable number.

61225641 is a deficient number, since it is larger than the sum of its proper divisors (30377429).

61225641 is a wasteful number, since it uses less digits than its factorization.

61225641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8153 (or 8121 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 61225641 is about 7824.6815270655. The cubic root of 61225641 is about 394.1344954700.

Adding to 61225641 its reverse (14652216), we get a palindrome (75877857).

The spelling of 61225641 in words is "sixty-one million, two hundred twenty-five thousand, six hundred forty-one".