1025112401 has 4 divisors (see below), whose sum is σ = 1031992500. Its totient is φ = 1018232304.

The previous prime is 1025112397. The next prime is 1025112419. The reversal of 1025112401 is 1042115201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 541772176 + 483340225 = 23276^2 + 21985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025112401 - 2² = 1025112397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1025112401.

It is not an unprimeable number, because it can be changed into a prime (1025112421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3439826 + ... + 3440123.

It is an arithmetic number, because the mean of its divisors is an integer number (257998125).

Almost surely, 2^1025112401 is an apocalyptic number.

It is an amenable number.

1025112401 is a deficient number, since it is larger than the sum of its proper divisors (6880099).

1025112401 is an equidigital number, since it uses as much as digits as its factorization.

1025112401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6880098.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1025112401 is about 32017.3765477436. The cubic root of 1025112401 is about 1008.3016915387.

Adding to 1025112401 its reverse (1042115201), we get a palindrome (2067227602).

The spelling of 1025112401 in words is "one billion, twenty-five million, one hundred twelve thousand, four hundred one".