61025261 has 12 divisors (see below), whose sum is σ = 68718972. Its totient is φ = 54120000.

The previous prime is 61025243. The next prime is 61025269. The reversal of 61025261 is 16252016.

It can be written as a sum of positive squares in 2 ways, for example, as 10530025 + 50495236 = 3245^2 + 7106^2 .

It is not a de Polignac number, because 61025261 - 2⁶ = 61025197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61025269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1190 + ... + 11111.

It is an arithmetic number, because the mean of its divisors is an integer number (5726581).

Almost surely, 2^61025261 is an apocalyptic number.

It is an amenable number.

61025261 is a deficient number, since it is larger than the sum of its proper divisors (7693711).

61025261 is a wasteful number, since it uses less digits than its factorization.

61025261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12364 (or 12353 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 61025261 is about 7811.8666783298. The cubic root of 61025261 is about 393.7040495299.

Adding to 61025261 its reverse (16252016), we get a palindrome (77277277).

The spelling of 61025261 in words is "sixty-one million, twenty-five thousand, two hundred sixty-one".