65442025 has 12 divisors (see below), whose sum is σ = 88525584. Its totient is φ = 47594000.

The previous prime is 65442019. The next prime is 65442043. The reversal of 65442025 is 52024456.

It is not a de Polignac number, because 65442025 - 2⁷ = 65441897 is a prime.

It is a super-2 number, since 2×65442025² = 8565317272201250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65441984 and 65442002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118711 + ... + 119260.

It is an arithmetic number, because the mean of its divisors is an integer number (7377132).

Almost surely, 2^65442025 is an apocalyptic number.

It is an amenable number.

65442025 is a deficient number, since it is larger than the sum of its proper divisors (23083559).

65442025 is a wasteful number, since it uses less digits than its factorization.

65442025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237992 (or 237987 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 65442025 is about 8089.6245277516. The cubic root of 65442025 is about 402.9819336888.

Subtracting from 65442025 its reverse (52024456), we obtain a square (13417569 = 3663²).

The spelling of 65442025 in words is "sixty-five million, four hundred forty-two thousand, twenty-five".