1425728619 has 24 divisors (see below), whose sum is σ = 2355854592. Its totient is φ = 813916080.

The previous prime is 1425728489. The next prime is 1425728627. The reversal of 1425728619 is 9168275241.

1425728619 is a `hidden beast` number, since 1 + 4 + 2 + 5 + 7 + 28 + 619 = 666.

It is not a de Polignac number, because 1425728619 - 2⁹ = 1425728107 is a prime.

It is a super-2 number, since 2×1425728619² = 4065404190071294322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1425728819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58362 + ... + 79104.

It is an arithmetic number, because the mean of its divisors is an integer number (98160608).

Almost surely, 2^1425728619 is an apocalyptic number.

1425728619 is a deficient number, since it is larger than the sum of its proper divisors (930125973).

1425728619 is a wasteful number, since it uses less digits than its factorization.

1425728619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21847 (or 21844 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 1425728619 is about 37758.8217374430. The cubic root of 1425728619 is about 1125.5003190907.

The spelling of 1425728619 in words is "one billion, four hundred twenty-five million, seven hundred twenty-eight thousand, six hundred nineteen".