11501125450 has 12 divisors (see below), whose sum is σ = 21392093430. Its totient is φ = 4600450160.

The previous prime is 11501125409. The next prime is 11501125453. The reversal of 11501125450 is 5452110511.

It can be written as a sum of positive squares in 3 ways, for example, as 5020714449 + 6480411001 = 70857^2 + 80501^2 .

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

It is not an unprimeable number, because it can be changed into a prime (11501125453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115011205 + ... + 115011304.

Almost surely, 2^11501125450 is an apocalyptic number.

11501125450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11501125450 is a deficient number, since it is larger than the sum of its proper divisors (9890967980).

11501125450 is a wasteful number, since it uses less digits than its factorization.

11501125450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230022521 (or 230022516 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 25.

Adding to 11501125450 its reverse (5452110511), we get a palindrome (16953235961).

The spelling of 11501125450 in words is "eleven billion, five hundred one million, one hundred twenty-five thousand, four hundred fifty".