25058921 has 2 divisors, whose sum is σ = 25058922. Its totient is φ = 25058920.

The previous prime is 25058899. The next prime is 25058933. The reversal of 25058921 is 12985052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21058921 + 4000000 = 4589^2 + 2000^2 .

It is a cyclic number.

It is not a de Polignac number, because 25058921 - 2⁶ = 25058857 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (25058951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12529460 + 12529461.

It is an arithmetic number, because the mean of its divisors is an integer number (12529461).

Almost surely, 2^25058921 is an apocalyptic number.

It is an amenable number.

25058921 is a deficient number, since it is larger than the sum of its proper divisors (1).

25058921 is an equidigital number, since it uses as much as digits as its factorization.

25058921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 25058921 is about 5005.8886324008. Note that the first 3 decimals coincide. The cubic root of 25058921 is about 292.6313083225.

The spelling of 25058921 in words is "twenty-five million, fifty-eight thousand, nine hundred twenty-one".