1125305501 has 2 divisors, whose sum is σ = 1125305502. Its totient is φ = 1125305500.

The previous prime is 1125305477. The next prime is 1125305509. The reversal of 1125305501 is 1055035211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1093889476 + 31416025 = 33074^2 + 5605^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125305501 - 2⁶ = 1125305437 is a prime.

It is a super-2 number, since 2×1125305501² = 2532624941161722002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125305509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562652750 + 562652751.

It is an arithmetic number, because the mean of its divisors is an integer number (562652751).

Almost surely, 2^1125305501 is an apocalyptic number.

It is an amenable number.

1125305501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125305501 is an equidigital number, since it uses as much as digits as its factorization.

1125305501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1125305501 is about 33545.5734933836. The cubic root of 1125305501 is about 1040.1360463667.

The spelling of 1125305501 in words is "one billion, one hundred twenty-five million, three hundred five thousand, five hundred one".