1425225240 has 128 divisors (see below), whose sum is σ = 4831488000. Its totient is φ = 373601664.

The previous prime is 1425225233. The next prime is 1425225247. The reversal of 1425225240 is 425225241.

It is an interprime number because it is at equal distance from previous prime (1425225233) and next prime (1425225247).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425225247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52537 + ... + 74903.

It is an arithmetic number, because the mean of its divisors is an integer number (37746000).

Almost surely, 2^1425225240 is an apocalyptic number.

1425225240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1425225240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2415744000).

1425225240 is an abundant number, since it is smaller than the sum of its proper divisors (3406262760).

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

1425225240 is a wasteful number, since it uses less digits than its factorization.

1425225240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22446 (or 22436 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1425225240 is about 37752.1554351536. The cubic root of 1425225240 is about 1125.3678441564.

Subtracting from 1425225240 its reverse (425225241), we obtain a palindrome (999999999).

The spelling of 1425225240 in words is "one billion, four hundred twenty-five million, two hundred twenty-five thousand, two hundred forty".