65125540 has 24 divisors (see below), whose sum is σ = 143962560. Its totient is φ = 24679008.

The previous prime is 65125523. The next prime is 65125573. The reversal of 65125540 is 4552156.

It is a junction number, because it is equal to n+sod(n) for n = 65125499 and 65125508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85312 + ... + 86071.

It is an arithmetic number, because the mean of its divisors is an integer number (5998440).

Almost surely, 2^65125540 is an apocalyptic number.

It is an amenable number.

65125540 is an abundant number, since it is smaller than the sum of its proper divisors (78837020).

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

65125540 is a wasteful number, since it uses less digits than its factorization.

65125540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171411 (or 171409 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 65125540 is about 8070.0396529385. The cubic root of 65125540 is about 402.3312616522.

Adding to 65125540 its reverse (4552156), we get a palindrome (69677696).

The spelling of 65125540 in words is "sixty-five million, one hundred twenty-five thousand, five hundred forty".