2151025 has 12 divisors (see below), whose sum is σ = 2690800. Its totient is φ = 1705680.

The previous prime is 2151013. The next prime is 2151031. The reversal of 2151025 is 5201512.

It is not a de Polignac number, because 2151025 - 2⁹ = 2150513 is a prime.

2151025 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3166 + ... + 3784.

2^2151025 is an apocalyptic number.

2151025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2151025 is a deficient number, since it is larger than the sum of its proper divisors (539775).

2151025 is a wasteful number, since it uses less digits than its factorization.

2151025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 2151025 is about 1466.6373103123. The cubic root of 2151025 is about 129.0867953430.

Adding to 2151025 its reverse (5201512), we get a palindrome (7352537).

The spelling of 2151025 in words is "two million, one hundred fifty-one thousand, twenty-five".