1156801025 has 6 divisors (see below), whose sum is σ = 1434433302. Its totient is φ = 925440800.

The previous prime is 1156800973. The next prime is 1156801049. The reversal of 1156801025 is 5201086511.

It can be written as a sum of positive squares in 3 ways, for example, as 387459856 + 769341169 = 19684^2 + 27737^2 .

It is not a de Polignac number, because 1156801025 - 2⁶ = 1156800961 is a prime.

It is a super-2 number, since 2×1156801025² = 2676377222882101250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23135996 + ... + 23136045.

It is an arithmetic number, because the mean of its divisors is an integer number (239072217).

Almost surely, 2^1156801025 is an apocalyptic number.

It is an amenable number.

1156801025 is a deficient number, since it is larger than the sum of its proper divisors (277632277).

1156801025 is an equidigital number, since it uses as much as digits as its factorization.

1156801025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46272051 (or 46272046 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 1156801025 is about 34011.7777394831. Note that the first 4 decimals coincide. The cubic root of 1156801025 is about 1049.7508176648.

Adding to 1156801025 its reverse (5201086511), we get a palindrome (6357887536).

It can be divided in two parts, 1156 and 801025, that multiplied together give a square (925984900 = 30430²).

The spelling of 1156801025 in words is "one billion, one hundred fifty-six million, eight hundred one thousand, twenty-five".