1425840618 has 16 divisors (see below), whose sum is σ = 2852187840. Its totient is φ = 475195776.

The previous prime is 1425840613. The next prime is 1425840623. The reversal of 1425840618 is 8160485241.

It is an interprime number because it is at equal distance from previous prime (1425840613) and next prime (1425840623).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1425840613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22371 + ... + 57897.

It is an arithmetic number, because the mean of its divisors is an integer number (178261740).

Almost surely, 2^1425840618 is an apocalyptic number.

1425840618 is an abundant number, since it is smaller than the sum of its proper divisors (1426347222).

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

1425840618 is a wasteful number, since it uses less digits than its factorization.

1425840618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42221.

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 1425840618 is about 37760.3047922021. The cubic root of 1425840618 is about 1125.5297897786.

The spelling of 1425840618 in words is "one billion, four hundred twenty-five million, eight hundred forty thousand, six hundred eighteen".