1525969 has 2 divisors, whose sum is σ = 1525970. Its totient is φ = 1525968.

The previous prime is 1525967. The next prime is 1525987. The reversal of 1525969 is 9695251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1183744 + 342225 = 1088^2 + 585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1525969 - 2¹ = 1525967 is a prime.

It is a super-2 number, since 2×1525969² = 4657162777922, which contains 22 as substring.

Together with 1525967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1525961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 762984 + 762985.

It is an arithmetic number, because the mean of its divisors is an integer number (762985).

2^1525969 is an apocalyptic number.

It is an amenable number.

1525969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1525969 is an equidigital number, since it uses as much as digits as its factorization.

1525969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 37.

The square root of 1525969 is about 1235.3011778510. The cubic root of 1525969 is about 115.1282501147.

The spelling of 1525969 in words is "one million, five hundred twenty-five thousand, nine hundred sixty-nine".