1425544515 has 20 divisors (see below), whose sum is σ = 2555421264. Its totient is φ = 760290192.

The previous prime is 1425544507. The next prime is 1425544553. The reversal of 1425544515 is 5154455241.

It is not a de Polignac number, because 1425544515 - 2³ = 1425544507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1425544515.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1759527 + ... + 1760336.

Almost surely, 2^1425544515 is an apocalyptic number.

1425544515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1425544515 is a deficient number, since it is larger than the sum of its proper divisors (1129876749).

1425544515 is an equidigital number, since it uses as much as digits as its factorization.

1425544515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519880 (or 3519871 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

The square root of 1425544515 is about 37756.3837648682. The cubic root of 1425544515 is about 1125.4518718085.

Adding to 1425544515 its reverse (5154455241), we get a palindrome (6579999756).

The spelling of 1425544515 in words is "one billion, four hundred twenty-five million, five hundred forty-four thousand, five hundred fifteen".