1425447620 has 24 divisors (see below), whose sum is σ = 3169525464. Its totient is φ = 536638976.

The previous prime is 1425447613. The next prime is 1425447629. The reversal of 1425447620 is 267445241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 147671104 + 1277776516 = 12152^2 + 35746^2 .

It is not an unprimeable number, because it can be changed into a prime (1425447629) 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, 2095907 + ... + 2096586.

It is an arithmetic number, because the mean of its divisors is an integer number (132063561).

Almost surely, 2^1425447620 is an apocalyptic number.

1425447620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1425447620 is an abundant number, since it is smaller than the sum of its proper divisors (1744077844).

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

1425447620 is a wasteful number, since it uses less digits than its factorization.

1425447620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192519 (or 4192517 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 1425447620 is about 37755.1005825703. The cubic root of 1425447620 is about 1125.4263720482.

The spelling of 1425447620 in words is "one billion, four hundred twenty-five million, four hundred forty-seven thousand, six hundred twenty".