2525921 has 8 divisors (see below), whose sum is σ = 2601984. Its totient is φ = 2450880.

The previous prime is 2525851. The next prime is 2525933. The reversal of 2525921 is 1295252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2525921 - 2¹⁴ = 2509537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2525981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10361 + ... + 10601.

It is an arithmetic number, because the mean of its divisors is an integer number (325248).

2^2525921 is an apocalyptic number.

It is an amenable number.

2525921 is a deficient number, since it is larger than the sum of its proper divisors (76063).

2525921 is a wasteful number, since it uses less digits than its factorization.

2525921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511.

The product of its digits is 1800, while the sum is 26.

The square root of 2525921 is about 1589.3146321607. The cubic root of 2525921 is about 136.1883383976.

It can be divided in two parts, 25 and 25921, that multiplied together give a square (648025 = 805²).

The spelling of 2525921 in words is "two million, five hundred twenty-five thousand, nine hundred twenty-one".