1225120431 has 8 divisors (see below), whose sum is σ = 1677642544. Its totient is φ = 794672640.

The previous prime is 1225120417. The next prime is 1225120441. The reversal of 1225120431 is 1340215221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225120431 - 2⁹ = 1225119919 is a prime.

It is a super-2 number, since 2×1225120431² = 3001840140907251522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1225120398 and 1225120407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225120441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5518450 + ... + 5518671.

It is an arithmetic number, because the mean of its divisors is an integer number (209705318).

Almost surely, 2^1225120431 is an apocalyptic number.

1225120431 is a deficient number, since it is larger than the sum of its proper divisors (452522113).

1225120431 is a wasteful number, since it uses less digits than its factorization.

1225120431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11037161.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1225120431 is about 35001.7204005746. The cubic root of 1225120431 is about 1070.0225432698.

Adding to 1225120431 its reverse (1340215221), we get a palindrome (2565335652).

The spelling of 1225120431 in words is "one billion, two hundred twenty-five million, one hundred twenty thousand, four hundred thirty-one".