1155221440025 has 48 divisors (see below), whose sum is σ = 1476101594880. Its totient is φ = 896402956800.

The previous prime is 1155221440019. The next prime is 1155221440039. The reversal of 1155221440025 is 5200441225511.

It is not a de Polignac number, because 1155221440025 - 2¹⁴ = 1155221423641 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1155221439973 and 1155221440000.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 124520687 + ... + 124529963.

It is an arithmetic number, because the mean of its divisors is an integer number (30752116560).

Almost surely, 2^{1155221440025} is an apocalyptic number.

It is an amenable number.

1155221440025 is a deficient number, since it is larger than the sum of its proper divisors (320880154855).

1155221440025 is a wasteful number, since it uses less digits than its factorization.

1155221440025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10274 (or 10269 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 1155221440025 its reverse (5200441225511), we get a palindrome (6355662665536).

The spelling of 1155221440025 in words is "one trillion, one hundred fifty-five billion, two hundred twenty-one million, four hundred forty thousand, twenty-five".