1405250663 has 4 divisors (see below), whose sum is σ = 1415360520. Its totient is φ = 1395140808.

The previous prime is 1405250653. The next prime is 1405250681. The reversal of 1405250663 is 3660525041.

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 1405250663 - 2⁴ = 1405250647 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 (1405250653) 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, 5054720 + ... + 5054997.

It is an arithmetic number, because the mean of its divisors is an integer number (353840130).

Almost surely, 2^1405250663 is an apocalyptic number.

1405250663 is a deficient number, since it is larger than the sum of its proper divisors (10109857).

1405250663 is a wasteful number, since it uses less digits than its factorization.

1405250663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10109856.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1405250663 is about 37486.6731385969. The cubic root of 1405250663 is about 1120.0857350929.

The spelling of 1405250663 in words is "one billion, four hundred five million, two hundred fifty thousand, six hundred sixty-three".