1425720 has 48 divisors (see below), whose sum is σ = 4316760. Its totient is φ = 376704.

The previous prime is 1425707. The next prime is 1425733. The reversal of 1425720 is 275241.

It is an interprime number because it is at equal distance from previous prime (1425707) and next prime (1425733).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13026 + ... + 13134.

2^1425720 is an apocalyptic number.

1425720 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 1425720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2158380).

1425720 is an abundant number, since it is smaller than the sum of its proper divisors (2891040).

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

1425720 is a wasteful number, since it uses less digits than its factorization.

1425720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1425720 is about 1194.0351753613. The cubic root of 1425720 is about 112.5498051079.

It can be divided in two parts, 1425 and 720, that added together give a triangular number (2145 = T₆₅).

The spelling of 1425720 in words is "one million, four hundred twenty-five thousand, seven hundred twenty".