61525908 has 72 divisors (see below), whose sum is σ = 160524000. Its totient is φ = 19861056.

The previous prime is 61525889. The next prime is 61525909. The reversal of 61525908 is 80952516.

It is a happy number.

61525908 is a `hidden beast` number, since 61 + 5 + 2 + 590 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61525909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176118 + ... + 176466.

It is an arithmetic number, because the mean of its divisors is an integer number (2229500).

Almost surely, 2^61525908 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61525908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80262000).

61525908 is an abundant number, since it is smaller than the sum of its proper divisors (98998092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61525908 is a wasteful number, since it uses less digits than its factorization.

61525908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 61525908 is about 7843.8452304976. The cubic root of 61525908 is about 394.7777588688. Note that the first 4 decimals are identical.

The spelling of 61525908 in words is "sixty-one million, five hundred twenty-five thousand, nine hundred eight".