1425250420 has 192 divisors, whose sum is σ = 3762339840. Its totient is φ = 446515200.

The previous prime is 1425250367. The next prime is 1425250423. The reversal of 1425250420 is 240525241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425250423) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2202537 + ... + 2203183.

It is an arithmetic number, because the mean of its divisors is an integer number (19595520).

Almost surely, 2^1425250420 is an apocalyptic number.

1425250420 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 1425250420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1881169920).

1425250420 is an abundant number, since it is smaller than the sum of its proper divisors (2337089420).

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

1425250420 is a wasteful number, since it uses less digits than its factorization.

1425250420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1425250420 is about 37752.4889245729. The cubic root of 1425250420 is about 1125.3744715522.

Adding to 1425250420 its reverse (240525241), we get a palindrome (1665775661).

The spelling of 1425250420 in words is "one billion, four hundred twenty-five million, two hundred fifty thousand, four hundred twenty".