61057025 has 12 divisors (see below), whose sum is σ = 76463484. Its totient is φ = 48360000.

The previous prime is 61056997. The next prime is 61057039. The reversal of 61057025 is 52075016.

It can be written as a sum of positive squares in 6 ways, for example, as 4566769 + 56490256 = 2137^2 + 7516^2 .

It is a de Polignac number, because none of the positive numbers 2^k-61057025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61056985 and 61057003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9566 + ... + 14615.

It is an arithmetic number, because the mean of its divisors is an integer number (6371957).

Almost surely, 2^61057025 is an apocalyptic number.

It is an amenable number.

61057025 is a deficient number, since it is larger than the sum of its proper divisors (15406459).

61057025 is a wasteful number, since it uses less digits than its factorization.

61057025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24292 (or 24287 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 61057025 is about 7813.8994746541. The cubic root of 61057025 is about 393.7723460905.

Subtracting from 61057025 its reverse (52075016), we obtain a square (8982009 = 2997²).

The spelling of 61057025 in words is "sixty-one million, fifty-seven thousand, twenty-five".