1011232143025 has 12 divisors (see below), whose sum is σ = 1350383846812. Its totient is φ = 746756043840.

The previous prime is 1011232143007. The next prime is 1011232143037. The reversal of 1011232143025 is 5203412321101.

It can be written as a sum of positive squares in 6 ways, for example, as 229372987041 + 781859155984 = 478929^2 + 884228^2 .

It is not a de Polignac number, because 1011232143025 - 2⁹ = 1011232142513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1555741434 + ... + 1555742083.

Almost surely, 2^{1011232143025} is an apocalyptic number.

It is an amenable number.

1011232143025 is a deficient number, since it is larger than the sum of its proper divisors (339151703787).

1011232143025 is a wasteful number, since it uses less digits than its factorization.

1011232143025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111483540 (or 3111483535 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 1011232143025 its reverse (5203412321101), we get a palindrome (6214644464126).

The spelling of 1011232143025 in words is "one trillion, eleven billion, two hundred thirty-two million, one hundred forty-three thousand, twenty-five".