1325255501 has 2 divisors, whose sum is σ = 1325255502. Its totient is φ = 1325255500.

The previous prime is 1325255489. The next prime is 1325255507. The reversal of 1325255501 is 1055525231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1274418601 + 50836900 = 35699^2 + 7130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325255501 is a prime.

It is a super-2 number, since 2×1325255501² = 3512604285861522002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1325255507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662627750 + 662627751.

It is an arithmetic number, because the mean of its divisors is an integer number (662627751).

Almost surely, 2^1325255501 is an apocalyptic number.

It is an amenable number.

1325255501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325255501 is an equidigital number, since it uses as much as digits as its factorization.

1325255501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1325255501 is about 36404.0588533751. The cubic root of 1325255501 is about 1098.4152112528.

The spelling of 1325255501 in words is "one billion, three hundred twenty-five million, two hundred fifty-five thousand, five hundred one".