83400525 has 36 divisors (see below), whose sum is σ = 160875988. Its totient is φ = 41057280.

The previous prime is 83400517. The next prime is 83400533. The reversal of 83400525 is 52500438.

It is an interprime number because it is at equal distance from previous prime (83400517) and next prime (83400533).

It can be written as a sum of positive squares in 6 ways, for example, as 171396 + 83229129 = 414^2 + 9123^2 .

It is not a de Polignac number, because 83400525 - 2³ = 83400517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11332 + ... + 17181.

Almost surely, 2^83400525 is an apocalyptic number.

It is an amenable number.

83400525 is a deficient number, since it is larger than the sum of its proper divisors (77475463).

83400525 is a wasteful number, since it uses less digits than its factorization.

83400525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28542 (or 28534 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 83400525 is about 9132.3887893585. The cubic root of 83400525 is about 436.9075954853.

The spelling of 83400525 in words is "eighty-three million, four hundred thousand, five hundred twenty-five".