1425220717 has 4 divisors (see below), whose sum is σ = 1446492736. Its totient is φ = 1403948700.

The previous prime is 1425220711. The next prime is 1425220757. The reversal of 1425220717 is 7170225241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1425220717 - 2¹⁵ = 1425187949 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 (1425220711) 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, 10635909 + ... + 10636042.

It is an arithmetic number, because the mean of its divisors is an integer number (361623184).

Almost surely, 2^1425220717 is an apocalyptic number.

It is an amenable number.

1425220717 is a deficient number, since it is larger than the sum of its proper divisors (21272019).

1425220717 is an equidigital number, since it uses as much as digits as its factorization.

1425220717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21272018.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 1425220717 is about 37752.0955312417. The cubic root of 1425220717 is about 1125.3666536909.

Adding to 1425220717 its reverse (7170225241), we get a palindrome (8595445958).

It can be divided in two parts, 14252 and 20717, that added together give a square (34969 = 187²).

The spelling of 1425220717 in words is "one billion, four hundred twenty-five million, two hundred twenty thousand, seven hundred seventeen".