1421662425 has 12 divisors (see below), whose sum is σ = 2350482000. Its totient is φ = 758219920.

The previous prime is 1421662423. The next prime is 1421662531. The reversal of 1421662425 is 5242661241.

It is not a de Polignac number, because 1421662425 - 2¹ = 1421662423 is a prime.

It is a super-2 number, since 2×1421662425² = 4042248101313761250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1421662423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9477675 + ... + 9477824.

It is an arithmetic number, because the mean of its divisors is an integer number (195873500).

Almost surely, 2^1421662425 is an apocalyptic number.

1421662425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1421662425 is a deficient number, since it is larger than the sum of its proper divisors (928819575).

1421662425 is a wasteful number, since it uses less digits than its factorization.

1421662425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18955512 (or 18955507 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 1421662425 is about 37704.9390000833. The cubic root of 1421662425 is about 1124.4293204365.

The spelling of 1421662425 in words is "one billion, four hundred twenty-one million, six hundred sixty-two thousand, four hundred twenty-five".