65678525 has 24 divisors (see below), whose sum is σ = 89303808. Its totient is φ = 47520000.

The previous prime is 65678513. The next prime is 65678537. The reversal of 65678525 is 52587656.

It is an interprime number because it is at equal distance from previous prime (65678513) and next prime (65678537).

It is not a de Polignac number, because 65678525 - 2⁶ = 65678461 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65780 + ... + 66770.

It is an arithmetic number, because the mean of its divisors is an integer number (3720992).

Almost surely, 2^65678525 is an apocalyptic number.

It is an amenable number.

65678525 is a deficient number, since it is larger than the sum of its proper divisors (23625283).

65678525 is a wasteful number, since it uses less digits than its factorization.

65678525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253 (or 1248 counting only the distinct ones).

The product of its digits is 504000, while the sum is 44.

The square root of 65678525 is about 8104.2288343802. The cubic root of 65678525 is about 403.4667936335.

The spelling of 65678525 in words is "sixty-five million, six hundred seventy-eight thousand, five hundred twenty-five".