61517425 has 12 divisors (see below), whose sum is σ = 78143436. Its totient is φ = 48012800.

The previous prime is 61517413. The next prime is 61517437. The reversal of 61517425 is 52471516.

It is an interprime number because it is at equal distance from previous prime (61517413) and next prime (61517437).

It can be written as a sum of positive squares in 6 ways, for example, as 2719201 + 58798224 = 1649^2 + 7668^2 .

It is not a de Polignac number, because 61517425 - 2⁷ = 61517297 is a prime.

It is a Duffinian number.

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, 28984 + ... + 31033.

It is an arithmetic number, because the mean of its divisors is an integer number (6511953).

Almost surely, 2^61517425 is an apocalyptic number.

It is an amenable number.

61517425 is a deficient number, since it is larger than the sum of its proper divisors (16626011).

61517425 is a wasteful number, since it uses less digits than its factorization.

61517425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60068 (or 60063 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 61517425 is about 7843.3044694185. The cubic root of 61517425 is about 394.7596144601.

The spelling of 61517425 in words is "sixty-one million, five hundred seventeen thousand, four hundred twenty-five".