65667525 has 96 divisors (see below), whose sum is σ = 137991168. Its totient is φ = 26764800.

The previous prime is 65667521. The next prime is 65667529. The reversal of 65667525 is 52576656.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65667521) and next prime (65667529).

It is not a de Polignac number, because 65667525 - 2² = 65667521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65667521) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 479257 + ... + 479393.

It is an arithmetic number, because the mean of its divisors is an integer number (1437408).

Almost surely, 2^65667525 is an apocalyptic number.

It is an amenable number.

65667525 is an abundant number, since it is smaller than the sum of its proper divisors (72323643).

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

65667525 is a wasteful number, since it uses less digits than its factorization.

65667525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 246 counting only the distinct ones).

The product of its digits is 378000, while the sum is 42.

The square root of 65667525 is about 8103.5501479290. The cubic root of 65667525 is about 403.4442678408. Note that the first 3 decimals are identical.

It can be divided in two parts, 65 and 667525, that added together give a triangular number (667590 = T₁₁₅₅).

The spelling of 65667525 in words is "sixty-five million, six hundred sixty-seven thousand, five hundred twenty-five".