83977425 has 72 divisors (see below), whose sum is σ = 179527200. Its totient is φ = 38374560.

The previous prime is 83977381. The next prime is 83977429. The reversal of 83977425 is 52477938.

It is not a de Polignac number, because 83977425 - 2¹¹ = 83975377 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (83977429) 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, 31806 + ... + 34344.

Almost surely, 2^83977425 is an apocalyptic number.

It is an amenable number.

83977425 is an abundant number, since it is smaller than the sum of its proper divisors (95549775).

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

83977425 is a wasteful number, since it uses less digits than its factorization.

83977425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572 (or 2554 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 83977425 is about 9163.9197399366. The cubic root of 83977425 is about 437.9126772813.

The spelling of 83977425 in words is "eighty-three million, nine hundred seventy-seven thousand, four hundred twenty-five".