1525261 has 2 divisors, whose sum is σ = 1525262. Its totient is φ = 1525260.

The previous prime is 1525243. The next prime is 1525267. The reversal of 1525261 is 1625251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1525225 + 36 = 1235^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 1525261 - 2⁵ = 1525229 is a prime.

It is a super-2 number, since 2×1525261² = 4652842236242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1525267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 762630 + 762631.

It is an arithmetic number, because the mean of its divisors is an integer number (762631).

2^1525261 is an apocalyptic number.

It is an amenable number.

1525261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1525261 is an equidigital number, since it uses as much as digits as its factorization.

1525261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 22.

The square root of 1525261 is about 1235.0145748128. The cubic root of 1525261 is about 115.1104421053.

The spelling of 1525261 in words is "one million, five hundred twenty-five thousand, two hundred sixty-one".