64120025 has 12 divisors (see below), whose sum is σ = 79747500. Its totient is φ = 51142080.

The previous prime is 64119977. The next prime is 64120027. The reversal of 64120025 is 52002146.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 375769 + 63744256 = 613^2 + 7984^2 .

It is not a de Polignac number, because 64120025 - 2²² = 59925721 is a prime.

It is a super-2 number, since 2×64120025² = 8222755212001250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64119979 and 64120006.

It is not an unprimeable number, because it can be changed into a prime (64120027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5051 + ... + 12399.

It is an arithmetic number, because the mean of its divisors is an integer number (6645625).

Almost surely, 2^64120025 is an apocalyptic number.

It is an amenable number.

64120025 is a deficient number, since it is larger than the sum of its proper divisors (15627475).

64120025 is a wasteful number, since it uses less digits than its factorization.

64120025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7708 (or 7703 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 64120025 is about 8007.4980487041. The cubic root of 64120025 is about 400.2498959309.

The spelling of 64120025 in words is "sixty-four million, one hundred twenty thousand, twenty-five".