61705125 has 64 divisors (see below), whose sum is σ = 116812800. Its totient is φ = 32126400.

The previous prime is 61705003. The next prime is 61705151. The reversal of 61705125 is 52150716.

It is a de Polignac number, because none of the positive numbers 2^k-61705125 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 158431 + ... + 158819.

It is an arithmetic number, because the mean of its divisors is an integer number (1825200).

Almost surely, 2^61705125 is an apocalyptic number.

It is an amenable number.

61705125 is a deficient number, since it is larger than the sum of its proper divisors (55107675).

61705125 is a wasteful number, since it uses less digits than its factorization.

61705125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 61705125 is about 7855.2609759320. The cubic root of 61705125 is about 395.1606994478.

The spelling of 61705125 in words is "sixty-one million, seven hundred five thousand, one hundred twenty-five".