1525251 has 32 divisors (see below), whose sum is σ = 2587648. Its totient is φ = 777600.

The previous prime is 1525243. The next prime is 1525261.

1525251 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1525251 - 2³ = 1525243 is a prime.

It is a super-2 number, since 2×1525251² = 4652781226002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1525261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10026 + ... + 10176.

It is an arithmetic number, because the mean of its divisors is an integer number (80864).

2^1525251 is an apocalyptic number.

1525251 is a deficient number, since it is larger than the sum of its proper divisors (1062397).

1525251 is a wasteful number, since it uses less digits than its factorization.

1525251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211.

The product of its digits is 500, while the sum is 21.

The square root of 1525251 is about 1235.0105262709. The cubic root of 1525251 is about 115.1101905403.

The spelling of 1525251 in words is "one million, five hundred twenty-five thousand, two hundred fifty-one".