61825840 has 40 divisors (see below), whose sum is σ = 149999328. Its totient is φ = 23654400.

The previous prime is 61825807. The next prime is 61825847. The reversal of 61825840 is 4852816.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 61825796 and 61825805.

It is not an unprimeable number, because it can be changed into a prime (61825847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14961 + ... + 18640.

Almost surely, 2^61825840 is an apocalyptic number.

It is an amenable number.

61825840 is an abundant number, since it is smaller than the sum of its proper divisors (88173488).

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

61825840 is a wasteful number, since it uses less digits than its factorization.

61825840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33637 (or 33631 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 61825840 is about 7862.9409256334. The cubic root of 61825840 is about 395.4182185810.

The spelling of 61825840 in words is "sixty-one million, eight hundred twenty-five thousand, eight hundred forty".