1425523111 has 4 divisors (see below), whose sum is σ = 1427872192. Its totient is φ = 1423174032.

The previous prime is 1425523109. The next prime is 1425523123. The reversal of 1425523111 is 1113255241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1113255241 = 7 ⋅159036463.

It is a cyclic number.

It is not a de Polignac number, because 1425523111 - 2¹ = 1425523109 is a prime.

It is a super-2 number, since 2×1425523111² = 4064232279990236642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425523171) 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, 1173630 + ... + 1174843.

It is an arithmetic number, because the mean of its divisors is an integer number (356968048).

Almost surely, 2^1425523111 is an apocalyptic number.

1425523111 is a deficient number, since it is larger than the sum of its proper divisors (2349081).

1425523111 is an equidigital number, since it uses as much as digits as its factorization.

1425523111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349080.

The product of its digits is 1200, while the sum is 25.

The square root of 1425523111 is about 37756.1003150484. The cubic root of 1425523111 is about 1125.4462390386.

Adding to 1425523111 its reverse (1113255241), we get a palindrome (2538778352).

The spelling of 1425523111 in words is "one billion, four hundred twenty-five million, five hundred twenty-three thousand, one hundred eleven".