61517625 has 32 divisors (see below), whose sum is σ = 110248320. Its totient is φ = 30283200.

The previous prime is 61517597. The next prime is 61517653. The reversal of 61517625 is 52671516.

It is an interprime number because it is at equal distance from previous prime (61517597) and next prime (61517653).

It is not a de Polignac number, because 61517625 - 2⁵ = 61517593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1435 + ... + 11184.

It is an arithmetic number, because the mean of its divisors is an integer number (3445260).

Almost surely, 2^61517625 is an apocalyptic number.

61517625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61517625 is a deficient number, since it is larger than the sum of its proper divisors (48730695).

61517625 is a wasteful number, since it uses less digits than its factorization.

61517625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12650 (or 12640 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 61517625 is about 7843.3172191363. The cubic root of 61517625 is about 394.7600422621.

The spelling of 61517625 in words is "sixty-one million, five hundred seventeen thousand, six hundred twenty-five".