83972925 has 18 divisors (see below), whose sum is σ = 150405242. Its totient is φ = 44785440.

The previous prime is 83972891. The next prime is 83972927. The reversal of 83972925 is 52927938.

It can be written as a sum of positive squares in 3 ways, for example, as 18071001 + 65901924 = 4251^2 + 8118^2 .

It is not a de Polignac number, because 83972925 - 2¹³ = 83964733 is a prime.

It is a super-3 number, since 3×83972925³ (a number of 25 digits) contains 333 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83972927) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 186382 + ... + 186831.

Almost surely, 2^83972925 is an apocalyptic number.

It is an amenable number.

83972925 is a deficient number, since it is larger than the sum of its proper divisors (66432317).

83972925 is a wasteful number, since it uses less digits than its factorization.

83972925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373229 (or 373221 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 83972925 is about 9163.6742085257. The cubic root of 83972925 is about 437.9048551702.

The spelling of 83972925 in words is "eighty-three million, nine hundred seventy-two thousand, nine hundred twenty-five".