11125511437 has 2 divisors, whose sum is σ = 11125511438. Its totient is φ = 11125511436.

The previous prime is 11125511429. The next prime is 11125511471. The reversal of 11125511437 is 73411552111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11111478921 + 14032516 = 105411^2 + 3746^2 .

It is a cyclic number.

It is not a de Polignac number, because 11125511437 - 2³ = 11125511429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11125511399 and 11125511408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11125511407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5562755718 + 5562755719.

It is an arithmetic number, because the mean of its divisors is an integer number (5562755719).

Almost surely, 2^11125511437 is an apocalyptic number.

It is an amenable number.

11125511437 is a deficient number, since it is larger than the sum of its proper divisors (1).

11125511437 is an equidigital number, since it uses as much as digits as its factorization.

11125511437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 31.

The spelling of 11125511437 in words is "eleven billion, one hundred twenty-five million, five hundred eleven thousand, four hundred thirty-seven".