86780925 has 72 divisors (see below), whose sum is σ = 193826880. Its totient is φ = 36057600.

The previous prime is 86780893. The next prime is 86780927. The reversal of 86780925 is 52908768.

It is not a de Polignac number, because 86780925 - 2⁵ = 86780893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86780927) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14821 + ... + 19829.

It is an arithmetic number, because the mean of its divisors is an integer number (2692040).

Almost surely, 2^86780925 is an apocalyptic number.

It is an amenable number.

86780925 is an abundant number, since it is smaller than the sum of its proper divisors (107045955).

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

86780925 is a wasteful number, since it uses less digits than its factorization.

86780925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5043 (or 5035 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 86780925 is about 9315.6279981545. The cubic root of 86780925 is about 442.7325216711.

The spelling of 86780925 in words is "eighty-six million, seven hundred eighty thousand, nine hundred twenty-five".