1425940999 has 4 divisors (see below), whose sum is σ = 1629646864. Its totient is φ = 1222235136.

The previous prime is 1425940993. The next prime is 1425941021. The reversal of 1425940999 is 9990495241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1425940999 - 2¹¹ = 1425938951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425940993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101852922 + ... + 101852935.

It is an arithmetic number, because the mean of its divisors is an integer number (407411716).

Almost surely, 2^1425940999 is an apocalyptic number.

1425940999 is a deficient number, since it is larger than the sum of its proper divisors (203705865).

1425940999 is an equidigital number, since it uses as much as digits as its factorization.

1425940999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203705864.

The product of its (nonzero) digits is 1049760, while the sum is 52.

The square root of 1425940999 is about 37761.6339556434. The cubic root of 1425940999 is about 1125.5562020702.

The spelling of 1425940999 in words is "one billion, four hundred twenty-five million, nine hundred forty thousand, nine hundred ninety-nine".