1111121542425 has 72 divisors (see below), whose sum is σ = 1884533703552. Its totient is φ = 577659430400.

The previous prime is 1111121542411. The next prime is 1111121542537. The reversal of 1111121542425 is 5242451211111.

It is a happy number.

It is not a de Polignac number, because 1111121542425 - 2⁸ = 1111121542169 is a prime.

It is a super-2 number, since 2×1111121542425² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111121542392 and 1111121542401.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 188227024 + ... + 188232926.

It is an arithmetic number, because the mean of its divisors is an integer number (26174079216).

Almost surely, 2^{1111121542425} is an apocalyptic number.

1111121542425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1111121542425 is a deficient number, since it is larger than the sum of its proper divisors (773412161127).

1111121542425 is a wasteful number, since it uses less digits than its factorization.

1111121542425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7491 (or 7445 counting only the distinct ones).

The product of its digits is 3200, while the sum is 30.

Adding to 1111121542425 its reverse (5242451211111), we get a palindrome (6353572753536).

The spelling of 1111121542425 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, five hundred forty-two thousand, four hundred twenty-five".