1525465 has 4 divisors (see below), whose sum is σ = 1830564. Its totient is φ = 1220368.

The previous prime is 1525423. The next prime is 1525471. The reversal of 1525465 is 5645251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 170569 + 1354896 = 413^2 + 1164^2 .

It is a cyclic number.

It is not a de Polignac number, because 1525465 - 2⁹ = 1524953 is a prime.

It is a Duffinian number.

1525465 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152542 + ... + 152551.

It is an arithmetic number, because the mean of its divisors is an integer number (457641).

2^1525465 is an apocalyptic number.

It is an amenable number.

1525465 is a deficient number, since it is larger than the sum of its proper divisors (305099).

1525465 is an equidigital number, since it uses as much as digits as its factorization.

1525465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305098.

The product of its digits is 6000, while the sum is 28.

The square root of 1525465 is about 1235.0971621698. The cubic root of 1525465 is about 115.1155737917.

The spelling of 1525465 in words is "one million, five hundred twenty-five thousand, four hundred sixty-five".