1231424025 has 96 divisors (see below), whose sum is σ = 2317351680. Its totient is φ = 572436480.

The previous prime is 1231424023. The next prime is 1231424027. The reversal of 1231424025 is 5204241321.

It is an interprime number because it is at equal distance from previous prime (1231424023) and next prime (1231424027).

It is not a de Polignac number, because 1231424025 - 2¹ = 1231424023 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1231423986 and 1231424004.

It is not an unprimeable number, because it can be changed into a prime (1231424023) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1995517 + ... + 1996133.

It is an arithmetic number, because the mean of its divisors is an integer number (24139080).

Almost surely, 2^1231424025 is an apocalyptic number.

1231424025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1231424025 is a deficient number, since it is larger than the sum of its proper divisors (1085927655).

1231424025 is a wasteful number, since it uses less digits than its factorization.

1231424025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1231424025 is about 35091.6517850044. The cubic root of 1231424025 is about 1071.8545950891.

Adding to 1231424025 its reverse (5204241321), we get a palindrome (6435665346).

The spelling of 1231424025 in words is "one billion, two hundred thirty-one million, four hundred twenty-four thousand, twenty-five".