1425449140 has 48 divisors (see below), whose sum is σ = 3101978880. Its totient is φ = 549843840.

The previous prime is 1425449131. The next prime is 1425449147. The reversal of 1425449140 is 419445241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1425449096 and 1425449105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425449147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57450 + ... + 78430.

It is an arithmetic number, because the mean of its divisors is an integer number (64624560).

Almost surely, 2^1425449140 is an apocalyptic number.

1425449140 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 1425449140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1550989440).

1425449140 is an abundant number, since it is smaller than the sum of its proper divisors (1676529740).

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

1425449140 is a wasteful number, since it uses less digits than its factorization.

1425449140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21112 (or 21110 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 1425449140 is about 37755.1207122954. The cubic root of 1425449140 is about 1125.4267720741.

The spelling of 1425449140 in words is "one billion, four hundred twenty-five million, four hundred forty-nine thousand, one hundred forty".