25241021 has 16 divisors (see below), whose sum is σ = 28089600. Its totient is φ = 22534848.

The previous prime is 25240973. The next prime is 25241033. The reversal of 25241021 is 12014252.

It is a cyclic number.

It is not a de Polignac number, because 25241021 - 2¹⁴ = 25224637 is a prime.

It is a super-2 number, since 2×25241021² = 1274218282244882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25241521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66410 + ... + 66788.

It is an arithmetic number, because the mean of its divisors is an integer number (1755600).

Almost surely, 2^25241021 is an apocalyptic number.

It is an amenable number.

25241021 is a deficient number, since it is larger than the sum of its proper divisors (2848579).

25241021 is a wasteful number, since it uses less digits than its factorization.

25241021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 25241021 is about 5024.0442872252. The cubic root of 25241021 is about 293.3384364069.

Adding to 25241021 its reverse (12014252), we get a palindrome (37255273).

The spelling of 25241021 in words is "twenty-five million, two hundred forty-one thousand, twenty-one".