1425623505 has 128 divisors (see below), whose sum is σ = 2588737536. Its totient is φ = 667699200.

The previous prime is 1425623503. The next prime is 1425623581. The reversal of 1425623505 is 5053265241.

It is not a de Polignac number, because 1425623505 - 2¹ = 1425623503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1425623501) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 30332392 + ... + 30332438.

It is an arithmetic number, because the mean of its divisors is an integer number (20224512).

Almost surely, 2^1425623505 is an apocalyptic number.

1425623505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1425623505 is a deficient number, since it is larger than the sum of its proper divisors (1163114031).

1425623505 is a wasteful number, since it uses less digits than its factorization.

1425623505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 1425623505 is about 37757.4297986502. The cubic root of 1425623505 is about 1125.4726586728.

Adding to 1425623505 its reverse (5053265241), we get a palindrome (6478888746).

The spelling of 1425623505 in words is "one billion, four hundred twenty-five million, six hundred twenty-three thousand, five hundred five".